This pest remains a threat in Florida, Hawaii and the Caribbean. Cymbal Ancylid Sculpture above periphery of whorls consisting of nodes arranged in vertical and spiral rows. The number of subfanilies recognized in the Hydrobiida is unsettled. Apex behind center of shell. Click on any of the seashell identification photos for information about each shell, where they were found, who found these shells and so much more. Thicker leaves may have damage on only one side. Umbilicus open. Umbilicus closed or narrowly perforate. Goblin Elimia) Elimia vanhyningiana (Goodrich, 1921). Pomacea canaliculata (Lamarck, 1822) (Gastropoda, Prosobranchia, Pilidae): A freshwater snail introduced into Florida, U. S. A. Malacological Review, 30:91. (Say, 1829). 51, 52). Radial riblets on entire surface of shell except apex. Penis with large papilla on right margin near base and one or two papillae on left margin near distal end (Figs. The reader may be troubled by the imprecise shell characteristics that are used in the key. Two occur in Florida. Introduction to the Physidae (Gastropoda, Hydophila): biogeograhy, classification, morphology. Shell with or without bands; slender; Suture deeply impressed; upper whorls with a strongly carinate periphery (Fig. 125); accessory crest absent on penis. Shell conical to ovate-conical. Base of last whorl with prominent spiral ridges. Shell elongate. Umbilicus variable. Pygmy Siltsnail) Floridobia parva (Thompson, 1968). Hershler, R. & F. G. Thompson. The state says a "gastropod enthusiast" collected unusual snails in the Coconut Grove area back in August. Walker, B. Apical whorls depressed; body whorl obtusely angular above and sharply carinated around funnel-shaped umbilicus. Its brown spotted exterior provides camouflage, making it a challenge to spot. (Say, 1829). Inferior crest usually present. 80). Aphaostracon chalarogyrus (Pfeiffer, 1839). Shell conical or cylindric-conical; light to dark brown. Flatwood siltsnail In 2011, a population of the pests was discovered in Miami-Dade County. Spire usually about equal to or greater than height of aperture (Figs. Shell light brown and frequently mottled with rust-colored spots that may form a spiral row below the suture. Nautilus, 19: 34. Shell usually corpulent, brown or green, generally opaque, but occasionally translucent in juveniles. Umbilicus open, although very narrow in some species; occasionally closed. Kites belong to the same bird family as hawks and eagles, Accipittridae. Marginal teeth of radula trapezoidal with well-differentiated cusps. Shell large, 3.7-4.5 mm long; adults with 4.6-5.3 whorls; lower corner of aperture slightly extended forward as a weak, tongue-like projection (Fig. Florida Flatcoil: Golden Zachrysia: Zachrysia provisoria (L. Pfeiffer, 1858) Gastrocopta pellucida (L. Pfeiffer, 1841) Zonitoides arboreus (Say, 1817) Garden Zachrysia: Slim Snaggletooth: Quick Gloss: Mesomphix globosus (MacMillan, 1940) Hawaiia minuscula (A. Binney, 1841) Mesodon thyroidus (Say, 1817) Globose Button: Minute Gem: White-lip Globe Adults about 2-3 mm long (Figs. Operculum paucispiral, with about three rapidly expanding whorls (Fig. Size small, discoidal, adults seldom exceeding 4 mm in width. (Thompson, 2000). The family attains its greatest diversity in Southeast Asia. Penis with papillae along both margins, or right margin only (papillae absent in some Aphaostracon). 1992. 198, 205). (Fig. Size larger, adults 7 mm or more in width. Umbilicus narrow, without a strong circum-umbilical ridge, outer lip without a callus on inner surface. Brown garden snail, Cornu aspersa (formerly Helix aspersa, Cantareus aspersus, and Cryptomphalus aspersus) is a member of the family Helicidae.This snail species originates from Britain, western Europe, and along borders of the Mediterranean and Black Seas. Taylor, D. W. 2003. Penis with 2 or 3 papillae on left margin (Fig. Elimia doolyensis Specimens then are placed in a fixative such as 10 percent formalin or Bouins Solution. Formalin will corrode the shell and thereby eliminate color, delicate sculpture, and the periostracum the thin skin coating present on most shells. (Reeve, 1856). 84). The first edition of The Freshwater Snails of Florida: a Manual for Identification was published in 1984. Whorls flat-sided with suture weakly impressed. Penis with a few simple scattered superior tubercles on outer surface; parapical crest on a low ridge; accessory crest and inferior crest absent (Fig. Mantle spotted with black, shaded or unmarked; terminal lobe of penis with complex crests that cause it to look like an animals head; flagellum slender, with scattered and discontinuous glands along edge (Figs. Florida Applesnail 208, 209), although radial striations may be present on other areas of shell. Shell of various shapes and sculpture. Shell sexually dimorphic in size, males about one-third as long as females. Outer lip continuously rounded (Figs. Spire short and compact, about 0.5-0.7 times height of aperture in mature specimens, proportionally longer in juveniles (Fig. The snails can produce 1,200 eggs in a year and grow up to about the size of a human fist. Thin and translucent or transparent. Sides of spire straight-sided in outline. Shell keeled or strongly angular at the periphery (Figs. Shell obese and ponderous. Umbilicus of shell perforated or broadly open. 111). The snail can wreak havoc on agriculture and carry a parasite that causes meningitis in humans.. Philadelphia, 134: 143-77. Biomphalaria havanensis A single glandular crest present on apex of terminal lobe (Figs. Burch, J.B. 1989. Mesa Rams-horn Shell nearly smooth, sculptured with irregularly spaced incremental striations (Figs. 37), which is important for generic and specific diagnosis. Base of shell when viewed from below showing about half of preceding whorl due to straight basal lip (Fig. The spire differs between bumpy and smooth but it is always elongated. A taxonomic revision of the feshwater snails referred to as Elimia curvicostata, and related secies. Shell thin, fragile, very much depressed, less than 0.25 times as high as long. In parthenogenetic organisms each population is inbred in the strictest genetic sense, and frequently a population will have minor characteristics that distinguish it from others. Goldenhorn Marisa Shell larger, reaching a maximum diameter of 18 mm. Penis with a dense pattern of superior tubercles. Bayou Physa 10). Shell with 4.4-5.0 whorls; about 3.7-5.2 mm long. 85). The radula is then thoroughly rinsed in distilled water, stained, and mounted on a microscope slide. Apex flat with narrow threadlike keel. Interior of adult aperture with brownish tinge. Opercula of minute snails can be studied most easily by removing them from the animal and viewing them with transmitted light. Malacological Review, 12: 41-49. Size smaller than last species, seldom exceeding 10 mm in width (Figs.194-196). Aperture terminating below periphery of body whorl. Shell planispiral, adults large, 35-50 mm (Figs. The species are highly variable, and there is no consensus regarding the number of valid species. State officials said the last live snail found in Florida before the Pasco . Pomacea bridgesi Penis filament black. Define Invasive Species: must have ALL of the following -. Umbilicus closed. 69). The snails live in the bays and mudflats, but after they die their shells wash up on the beaches. 146). Whorls straight-sided, not scalariform; suture hardly distinct; aperture terminating at periphery of last whorl; vertical ribs weaker and closely spaced; adult size about 25-30 mm long (Fig. Little is known about these animals, and diverse opinions exist as to how many species are recognizable. This subfamily includes about fifteen North American and European genera (Thompson 1979). Penis with different arrangement of papillae than above. Whorls globose, with a deeply impressed suture. Ovate Campeloma Malacological Review, 19: 85-86. 5). Our knowledge of the fauna has greatly increased during recent years, and a summary of this information was desirable to facilitate other kinds of study. Bugle Sprite Aperture broadly ovate. Sexes not conspicuously dimorphic in size. Pomacea paludosa, common name the Florida applesnail, is a species of freshwater snail with an operculum, an aquatic gastropod mollusk in the family Ampullariidae, the apple snails . Body whorl strongly keeled as though pinched at the periphery (Figs. Squaremouth Amnicola Work through the questions, each time choosing the characteristic that best matches your snail from the two choices. Florida Museum of Natural History Base of shell with dark red spiral band. The species of snail was present in Florida in the 1960s and 1970s before being eradicated in 1975, the FDACS said. They are most common on tropical islands but occur also in cold regions, where they hibernate. (Walker, 1925). Shell conical or cylindrical-conical in shape; spire elevated; body whorl not disproportionately voluminous; umbilicus closed or open. 58). 86). Rasp Elimia (Pilsbry and Johnson, 1903). 117). Two species occur in Florida. Each: $28.50 M-890 BANDED TULIP SHELL, Fasciolaria lilium A small predatory snail that feeds on clams. Rock Fossaria This genus contains three species. (Thompson, 1968). (Menke, 1839). Umbilicus widely perforate, accentuated by a strong circum-umbilical keel. It can grow to a length of 16 inches (400 millimeters) and is easily identifiable by the left-handed opening of the shell - meaning when you look at the shell, the opening is on the left. Graphite Elimia Operculum loosely coiled, with 3.75 large whorls, the outer one expanding more rapidly than the others (Figs. Newborn young about 4.5 mm in diameter (this can be determined by removing juveniles from brood pouch). Though small, this elusive specimen is a rare and valuable jewel, waiting to be discovered. It should also be remembered that many groups have not been studied sufficiently, and the reader may have material that adds to or contradicts previously recorded information. (Sowerby, 1878). 203, 209). Radula with tricuspid lateral teeth (Fig. Shell transparent or translucent. It also was the first adequately illustrated faunal summary published on the Southeast. JACKSONVILLE, Fla. - An invasive giant African snail that has already had to be eradicated twice in the last 50 years in Florida is back and one county is on high alert. Conical Siltsnail They were detected in 2011 in Miami-Dade County and eradicated again in 2021. Shell conical or cylindric-conical. Amnicola dalli. 107, 108). 16, 29). Shell globose or tear-shaped. Fortunately in Florida, the species are relatively easy to distinguish. Pewter Physa 81). Aperture trapezoidal in shape; spire more robust, straight sided; with a shallower suture; parapical crest large (Fig. Additional surveys found four different populations all associated with the CSX railways. Click on the link in the row that best matches your snail. Parietal margin of operculum convex. Shell usually elevated, but variable. (Clench & Turner, 1956). Shell conical with strongly arched whorls and a deeply impressed suture. Sculpture variable. 161, 164, 167). The best times to look for shells are after a high tide, after a storm, in the morning, and during the winter months. In others they are deposited in the water in gelatinous clusters. Shell minute, 2.0-2.3 mm long; thin and transparent; spire 0.7-1.1 times length of aperture; flagellum lacking glandular crests. October 14, 2021 7:00 am. This monumental work changed all previous concepts concerning subfamilies, genera and species in the family. Hebetancylus excentricus 1-69. Channeled Applesnail Aperture loosely attached to or widely separated from preceding whorl. Florida authorities believe that the snail, native to eastern Africa, was reintroduced to the state when someone brought it home as a pet. Arboreal forms, such as Liguus of Florida and Cuba, tend to be brightly coloured; terrestrial forms usually are drab. Fossaria modicella Knobby Elimia Burch, J. Aquatic; moves by gliding motion. Work through the questions, each time choosing the characteristic that best matches your snail from the two choices. 12). Definitive identifications may require anatomical dissections and reference to other literature. Melanoides turricula Aperture rhomboid; baso-columellar angle extended as slight tonguelike projection; basal lip broadly but shallowly indented (Fig. (Say, 1825). Campeloma parthenum Lobe and flagellum with various patterns of dermal glands (Fig. 16, 17). Planorbella trivolvis intertexta Floridobia is known from peninsular Florida north along the Atlantic seaboard to Maine. Operculum constructed entirely of concentric rings (Fig. Planorbis alabamensis and dilatatus in the Floridian Pliocene. Transparent white (Fig. Apical whorls bluntly rounded and not conspicuously elevated. Sculptured with regularly spaced, fine, incremental threads and spiral striations; spiral striations evident only on base of whorls in some specimens. Taylor (2003) monographed the family Physidae. Pseudosuccinea columella Rails, gallinules, coots and cranes. Most snails will have a conical shaped shell. Malacological Review, Suppl. (Thompson, 1968). Goodrich, C. 1942. 67). You can also navigate through the images by clicking on the arrows near the left and right edges of the enlarged view. Being nocturnal, these pests aren't always feeding when you're scouting. As was anticipated, further work on the systematics of the southeastern freshwater snail fauna created the need for subsequent revision in 1999, and for this updated version. Penis with 4-6 papillae along right margin (Fig. Oftentimes you'll see trails of mucous around these damaged sites. Penis with 5-15 papillae along right margin arranged in 1-2 rows (Fig. Gray to brownish-yellow in color. Last whorl flattened above. The species was eradicated again in 2021 after being detected in 2011 in Miami-Dade County, according to FDACS. Overshadowing this genetic divergence are frequent examples of convergent evolution of similar adult shell characters among distantly related species. Includes the limpkin, a Sunshine State specialty. POMATIOPSIDAE Marsh Sprite A systematic study of the Family Physidae (Basommatophora: Pulmonata). 132). Terminal lobe of penis slender. Rather stocky, adult about 15-20 mm long (Fig. Sci. Campeloma parthenum (Gastropoda: Viviparidae), a new species from north Florida. 110, 111, 68). Aphaostracon pachynotus Conical with relatively slender whorls. Serrated Crownsnail Shell depressed. Shell usually large, about 12-16 mm long. The profile of the whorls and their comparative size can also help determine the species. Penis as illustrated (Fig. Penis filament white. 88). Embryonic shell smooth, without spiral chords (Fig. 105, 106). Shell usually small to medium (2-25 mm). Davis, G.M., M. Mazurkiewicz, & M. Mandracchia. Adult shells about 40 70 mm high (Fig. Attains a length of about 30-36 mm (Figs. Surface smooth or dented with hammer marks. The Junonia is seldom found, and is considered a special find by beachcombers. Body whorl rounded (Fig. The Snail Kite uses its slender, curved bill to extract its primary prey, the apple snail, from its shell. Micromenetus dilatatus avus (Pilsbry, 1905). Amnicola rhombostoma Dasyscia franzi Mantle diffusely pigmented with melanophores (Fig. Recent studies treat amnicolids as a separate families. Adults with six teeth in aperture, two on the parietal wall and four on the palatal wall. Operculum with concentric growth rings around nucleus (Figs. Occasional Papers on Mollusks, 2: 385-412. Adequate preservation begins when the specimens are collected. 16, 22-28). Operculum with about 3 whorls (Fig. Eight species have been proposed. Ecology: This large snail is found in freshwater lakes, rivers, streams, ponds and ditches, preferring slow-moving water. Shell ovate in shape, about 1.2-1.5 times as high as wide. Nautilus, 32: 71. Click on the link in the row that best matches your snail. Euglandina rosea, the rosy wolfsnail or cannibal snail, is a species of medium-sized to large predatory air-breathing land snail, a carnivorous terrestrial pulmonate gastropod mollusk in the family Spiraxidae.. M-879 CONE SNAIL, Conus floridanus A small and less poisonous species, no one has ever died or been stung by one of these slow-movers, but like all cones, they have a venomous proboscis. Spire of adults without distinct vertical ribs. (This character separates only the genera under consideration; genera from other areas of the world do not conform to this distinction.) Shell brightly banded and with large, wide and wavey vertical folds; robust, usually 21-25 mm long (Fig. Parapical crest of verge greatly enlarged. Clifton Spring Hydrobe Littoridinops palustris Color of fresh shell never milky white. Florida's Department of Agriculture and Consumer Services said that a Pasco County master gardener reported seeing a giant African land snail in the New Port Richey area on June 23. They were created by or for the Florida Department of Environmental Protection, or its predecessor agencies.Amphipod Key, Volumes 1-5 - LeCroy, Sara E. An Illustrated Identification Guide to the Nearshore Marine and Estuarine Amphipoda of Florida:Volume 1 (2000, PDF, 18 MB).Volume Campeloma floridense It is globose in shape, body whorls are wide, spire is depressed, and the aperature is narrowly oval (Burch 1982). 69, 70). 90). Shell larger, 2.2-4.8 mm long. Shell more slender and attenuate; spire more elongate in adults, about 0.7- 1.0 times height of aperture. Taylor recognizes twenty-three genera based on the soft anatomy. Three new freshwater snails of the genus Cincinnatia from peninsular Florida. (The penis is normally recurved into the mantle cavity, except during mating. Floridobia leptospira 6). Shell squat, compact, cylindric-conical in shape, thick and opaque. Adult shells about 40-60 mm high (Fig. This is not the first time Florida has dealt with an invasion of giant snails. 204-207), often eroded in older specimens. The genus is difficult to diagnose by shell characters because the three species are very dissimilar. Apex about 0.4-0.5 times length of shell. Shell elongate with pointed conical spire. Apex smooth, with no trace of radial striations (Fig. Shell conical to elongate-conical; whorls 4.0-4.5 with a deeply impressed suture. Pilsbry, H. A. Aperture enlarged (dilated). 54). Clench, W.J. Apex less than 0.4 times length of shell. Shell cap-shaped or limpet-like with a wide, open aperture forming base of shell (Figs. 1962. (Fig. Body whorl inflated. 174-176). Suture more deeply impressed than in 77a. 159, 162, 165). Shell grayish-white. Photo: University of Florida. Marsh Rams-horn 172). Penis with 3 I 0 small papillae around base and 7-15 papillae along right margin in a single row (Fig. The current status of these introductions is not known. Their color varies from red-orange, to pink, to a blue purple. The giant African land snail ( Lissachatina fulica (Bowditch)) (GALS) is one of the most invasive pests on the planet, causing agricultural and environmental damage wherever it is found. Sculpture consisting of incremental striations only. The giant African snails detected in New Port Richey, Florida are unrelated to the population of giant African snails eradicated from Broward and Miami Dade counties last year. As a result . Accessory crest present. Mimic Pondsnail The giant African land snail is back in Florida after having been declared eradicated twice. Fine vertical ribs present on uppermost whorls. 46). Florida Cone (Family) Conidae Distinguishing Characteristics: The Cones are easily identified by the distinctive cone-like shape and a long aperture that reaches up to their shoulder. Body whorl angular. common name: tree snails of Florida scientific name: Gastropoda: Stylommatophora: Bulimulidae Introduction - Identification - Key to the Bulimulidae of Florida - Selected References Introduction (Back to Top) Many snails are found in trees, but only a few are exclusively arboreal for most or all of their life cycle. 1, 2). 35). (Lamarck, 1822). Aphaostracon hypohyalina (Thompson, 1968). (Lea, 1862). Aperture relatively shorter, about half or less the length of the shell. Length of shell 3.0-4.0 mm (Fig. Umbilicus of shell closed. Floridobia wekiwae One species occurs naturally in Florida, and three others have been introduced. These are white, which is the more prized color in. 63). Whorls of spire weakly scalariform, causing the suture to be deeply incised. Brownish-yellow in color (Fig. Basch (1963) revised the classification and recognized only twelve species. 122). Outer lip of aperture nearly straight in lateral profile (Figs. In previous editions of the manual the Florida species were placed in the genus Physella. Males with penis at anterior right corner of mantle cavity. Body whorl uniformly rounded peripherally (Fig. 16, 25, 28). It wasn't until 2021 the population was. Nucleus of operculum spiral and then surrounded by concentric growth rings (Fig. TALLAHASSEE, Fla. (AP) Florida, a state that encourages people to kill non-native iguanas, pythons and lionfish, has a new invasive species to worry about: the horntail snail, which has never . 110). (Lea, 1858). 1978. 1905. Henscomb Hydrobe Gulf Coast Pebblesnail) Somatogyrus walkerianus (Aldrich, 1905). 56). Generally with distinct axial and spiral striations. 1991. Slough Hydrobe Whorls uniformly rounded, not flattened above (Fig.144). Until recently the entire knowledge of the Florida freshwater snail fauna was based on miscellaneous papers dealing with single species, groups of closely related species or single river systems. Accessory crest absent. Aperture usually open; occasionally with a horizontal, shelf-like septum closing posterior part (Fig. (Goodrich, 1924). Primarily parthenogenetic; females viviparous with young snails in a brood pouch in nape. 136, 138). MESZAROS: It's not clear how these snails entered Florida again. Shell minute, 2.4-2.7 mm long; adults with 3.9-4.2 whorls; spire short, 0.8- 1.1 times height of aperture (Fig. Apex proportionally longer, about 0.3-0.5 times length of shell. 197-209). Elimia buffyae Peristome complete around aperture. Thompson, F. G. & R. Hershler. Proc. Shell moderately elevated, over 0.25 times as high as long. For the purpose of completeness, the three parthenogenetic forms and C. geniculum are included in the key. Identification KeysThese files are all keys for the identification of various kinds of organisms. Penis with a single papilla along left margin (Fig. They can also carry rat lungworm, which causes meningitis in humans. 131). (Thompson, 1968). Gainesville, Florida 32611-7800. (Lamark, 1822). 118). (C.B. Campeloma geniculum Seashell Identification Identify your Florida Gulf Coast seashells! Two genera of North American freshwater snails: Marstonia Baker, 1926 resureected to generic status, and Floridobia, new genus (Prosobranchia, Hydrobiidae, Nymphophilinae). (Reeve, 1860). Shell larger, thicker, and opaque; spire 0.9-1.3 times length of aperture; with more than 4.2 whorls; penis flagellum with glandular crests. Color often glossy reddish brown. Pomacea paludosa As of last . Inside of lip with or without a reddish callus but callus never dark red in color. Parietal margin of operculum slightly convex in outline (Fig. The manual treats only those genera that occur in freshwater. Viviparus intertextus (Thompson, 1968). Penis of males with papillae along sides (Figs. Revista de Biologia Trpical, 51 (supplement): 1-299. Spiral sculpture absent. Basch (1963) recognized five valid species. An invasive snail species known as the giant African land snail has officially been eradicated in the state of Florida after years of attempts and $24 million worth . Giant African Land Snail Identification Sheet - Florida Commissioner of . Acad. 99). Ampullariids have been referred to as PILIDAE in earlier editions of this manual. Shell cylindric-conical with 4.5-5.0 whorls. Choctawhatchee Pebblesnail) Somatogyrus sp. Earlier whorls of adult shell with heavy vertical ribs crossed by knobby folds or a strong spiral chord; sides of spire straight or weakly convex in lateral profile; embryonic shell with a single spiral chord on periphery and heavy vertical ribs, but without basal spiral chord (Fig. Nautilus, 83: 72. 95). 77-79). Bulletin of the Florida State Museum, Biological Sciences, 1: 97-239. The molluscan family Planorbidae. Ph.D. thesis, University of Michigan, i-xii, 1-324. Shell with darker colored spiral chords that may be smooth or wavy. Freemouth Hydrobe 38). Typically, land snails live on or near the ground, feed on decaying plant matter, and lay their eggs in the soil. Spire raised and flat-topped. Shell coiled to the left, with the aperture on the left side (Figs.147-158). Shell relatively thick (Figs. Shell thick and solid; whorls weakly convex or flattened (Figs. Spiral angulation on whorls sharp and prominent in juveniles, usually becoming convex-rounded or smooth on last whorl in adults. Another variety, with cream-colored flesh and mottled brown shells, was detected in 2022. Credit: Craig Pittman. Whorls of spire pointed and scalariform (steplike with nearly flat shoulders and deep sutures). Whorls of spire strongly arched or rounded. The aquatic snail fauna of the southeastern United States has long been recognized for its richness and diversity. 61). They are commonly found on live aquatic plant stems, dead leaves and sticks, and on bottles and cans. Spiral or costate sculpture usually present. Apex in the posterior right third, domelike and evenly rounded. Shell smooth. 66). Columellar margin of aperture wide, rounded in front like a spindle. (Fig.114). 115, 116). Malacological Review, 24: 55-72. (Vail, 1979). The author has attempted to simplify the key to include the minimum anatomical data needed for accurate identification. 44). On June 24th the Florida Department of Agriculture and Consumer Services (FDACS) created a quarantine surrounding the town of New Port Richey. The Florida Department . Shell subcircular, smooth, often encrusted with dark material. Planorbula armigera wheatleyi Smooth-ribbed Hydrobe 34, 35). The . 1969. 112), occurs in the Ocmulgee River system in Georgia. Penis as illustrated (Fig. It is most common in Southwest Florida, and northwest Florida. Floridobia helicogyra 24, 27). Floridobia fraterna There is much disagreement as to how many species actually exist. Body whorl relatively rapidly expanding in diameter (Fig. Like. (Walker, 1908). Peristome narrow to broadly ovate. Aperture narrow, about half as wide as high. Operculum calcareous with two pegs on inner surface (Figs. Aperture of shell closed by an operculum (snail must be collected live because the operculum is lost soon after death). Base of shell usually without spiral band. 201, 207). The following key is modified from Basch (1963). The radula can be studied by dissecting out the buccal mass and macerating it in clorox or sodium hydroxide. Tryonia aequicostatus Aperture ovate; baso-columellar angle not extended; basal lip not indented. Parietal margin of operculum concave (Fig. University of Illinois Press, Urbana. Thompson, F. G. & R. Hershler. Excentric Ancylid Prominent minor spiral sculpture along periphery. Suture more deeply impressed. 22). Outer lip nearly straight and parallel to axis of shell in adults (Fig. Aperture comma-shaped, tightly appressed against preceding whorl. CLICK ON EACH PHOTO Fallen Angel Wing -Atlantic Mud Piddock Boring Angel Wing- Striate Piddock Rice Olive 180-182). Te, G.A. (Thompson, 1968). Radial striations present or absent Laevapex Walker, 1903. 3). Two subfamilies occur in North America. 19-21). 53). Last whorl not shouldered (Figs.155, 156). Penis with some superior tubercles fused into a U-shaped crest; parapical crest raised on a fleshy pedicel; accessory crest and inferior crest usually present (Fig. 2015; Jayashankar et al. 173). The horntail . Newborn shells white. Scatter a few granulated menthol crystals on the water surface and allow the container to sit for 10-15 hours, at which time the snails should be extended from the shell and insensitive to probing with a needle. Female adult snail kites have yellow or orange legs and ceres; and red or orangish-brown eyes. Spilochlamys gravis Elimia athearni The horntail snail belongs to the genus Macrochlamys (family Ariophantidae), which has over a hundred described species distributed from South to Southeast Asia and southern China (Pholyotha et al. Peristome complete around aperture. The genus is found along the east coast of North America from Maryland south to Tabasco, Mexico. 1934. Review of the Planorbidae of Florida with notes on other members of the family. Whorls 4.6-5.3. Shell glossy. Giant African land snails, an invasive species of mollusk, poses a threat to Florida residents as it can spread meningitis from a parasite it carries. The living snail is bright orange. Adults with about 5 whorls, and 10-13 mm wide (Figs.177-179). Only three widely distributed species occur in Florida. 140). Aperture elliptical in shape; spire slenderer and slightly convex in outline; suture moderately impressed suture; parapical crest reduced in size.