Two-ridged Rams-horn While the shell itself is the primary means of protection, the snail's ability to adhere to a surface and its production of noxious compounds also discourages predators. (Walker, 1925). Operculum paleomelanian, with a large sub-centrally located nucleus (Fig. Littoridinops palustris The best known classes of molluscs are the Gastropoda (snails and slugs), Bivalvia (clams, oysters, mussels and scallops) and Cephalopoda (squids, cuttlefishes, octopuses and nautiluses). 1956. 125); accessory crest absent on penis. Campeloma floridense 5: 1-140. Common Name: Florida Cone. Graphite Elimia Definitive identifications may require anatomical dissections and reference to other literature. Sculpture consisting of fine incremental threads, and spiral striations that may become obsolete at maturity. Penis filament black. Shell is much wider than it is tall. Pseudosuccinea columella 162). Wikimedia Commons This shell looks so beautiful, yet it hides a deadly weapon that can kill you. Outer lip of aperture arched forward (Figs. Axial striations distinct (Fig. Terminal lobe of penis slender. 159-179). North American freshwater snails: species list, ranges and illustrations. Shell subcircular, smooth, often encrusted with dark material. Moon Snails and Purple Sea Snails Shell Collecting; Further Reading; Rush Educational Shell Display ; Cones ... Common Name: Florida Cone. 65). Shell with 5.0-6.5 whorls; about 3-5 mm long (Fig. Lower margin of aperture advanced beyond upper margin so that plane of aperture slopes posteriorly when viewed from the side (Figs.189-193). Looking for Freshwater Snails? The fixative may damage the shell, but that is unimportant for anatomical purposes. In 1976 in the St. Johns River 1 found Melanoides tuberculatus with population densities of 10,000/m2. Mesa Rams-horn Dasyscia franzi 81-83). Apex of shell flat, though it may be raised above the periphery of the last whorl (Figs. Businesses . Shell 2.8-3.7 mm long. Adult shells small, less than 3 mm high; umbilicus closed by the reflected columellar lip; columellar margin of the aperture nearly straight, barely convex (Fig. Penis with two or more longitudinal crests within U-shaped superior tubercle (Fig. Choctawhatchee Pebblesnail) Somatogyrus sp. Radial riblets on entire surface of shell except apex. The cone snail lives in the Pacific ocean is prized by beachgoers for its beautifully colored shell. It was well received, and it served the interests and needs of many people. Aquatic; moves by gliding motion. Micromenetus brogniartiana Important diagnostic characteristics for subfamilies, genera, and species are found in the female reproductive system, the male reproductive organ (the penis), and modifications of the radular teeth. State Regulations for Snail Farming. Aperture loosely attached to or widely separated from preceding whorl. Serrated Crownsnail Many samplings of hydrobiids collected during the period of May through September are not identifiable because only immature forms are present, and important diagnostic anatomical characteristics have not yet developed. Pomatiopsis lapidaria Some species that are endemic to Florida springs live in environments with nearly constant temperatures and apparently reproduce continuously throughout the year. 107, 108). Distinguishing Characteristics: A short, sharp spire with convex whorls that seem to overlap. Shell conical, olivaceous in color. Among the most interesting of the molluscs are the snails. Curator of Malacology Shell smaller, generally less than 12 mm long. Shell thick and solid; whorls weakly convex or flattened (Figs. Vertical ribs smooth along the periphery, strongly developed (Fig. (Thompson, 1968). Three new freshwater snails of the genus Cincinnatia from peninsular Florida. Shell cap-shaped or limpet-like with a wide, open aperture forming base of shell (Figs. Shell sculptured with fine spiral threads. Shell highly variable in shape; freshwater forms olivaceous or brown; adults with about 4.5-6.0 whorls; about 3.5-4.5 mm long (Fig. Radula with tricuspid lateral teeth (Fig. 5). Maiden Campeloma Shell nearly smooth, sculptured with irregularly spaced incremental striations (Figs. 143). Rather stocky, adult about 15-20 mm long (Fig. A review of the aquatic gastropod subfamily Cochliopinae (Prosobranchia, Hydrobiidae). Generally with distinct axial and spiral striations. Flamingo tongue. 146). The bodies of large snails, such as viviparids and pilids, should be pulled from the shell. Size larger, adults 7 mm or more in width. The lymnaeid fauna of the southeast is particularly depauperate compared to more northern and western regions of the continent. Overshadowing this genetic divergence are frequent examples of convergent evolution of similar adult shell characters among distantly related species. Whorls 3.0-4.0. 47). Sides are smooth and mottled yellow, orange, and brown, often circled with lines composed of dashes. Aperture strongly oblique. Peninsula Ancylid Outer lip partially flattened in adults. Shell usually elevated, but variable. Walker, B. 92). Whorls 4.6-5.3. 53). Thiarids are ecologically significant because they tend to replace native snails where they are introduced and because of their abundance. Ferrissia mcneilli (Pfeiffer, 1839). Travelers. 172). Shell conical or globose-conical; thin, translucent, occasionally opaque. Melanoides tuberculata (Muller) in Florida. (Say, 1825). Length of shell 2.0-2.4 mm (Fig. Sides of spire concave in outline (Fig. Shell conical, spire moderatly high. Elimia floridensis Formalin does not even serve as a good fixative or preservative for long-term anatomical studies. Peristome ovate to subcircular. Aperture narrow, about half as wide as high. Aperture oval, about 0.75 times as wide as high. 38). Malacological Review, 12: 87-88. 34, 35). Outer lip of aperture nearly straight in lateral profile (Figs. (Thompson, 1968). Subspecies bear the same name as the nominate subspecies, as is consistent with the standard used by the American Fisheries Society for fishes, and by other societies for other classes of animals. Physid species have similar and superficially featureless, variable shells, and the shell is imprecise for identifying most genera and many species. B. Thompson, F.G. 1968. 57). Dipping them in a dilute solution of oxalic acid and gently scrubbing them with a fine brush can clean such specimens. The VIVIPARINAE is widely distributed throughout Europe, Asia and eastern North America. Interesting Facts:  Also called Necklace Shells. 101). Sides of spire straight in lateral profile. Suture not as deeply impressed as in 77b. Suture simple, not crenulated. Aphaostracon pachynotus Nuclear whorl 0.29-0.33 mm in diameter. 130). Pseudotryonia brevissimus Hawkwing conch. Adult shells about 40 – 70 mm high (Fig. Dorsl surface of penis with a few elongate superior tubercles that form a weakly defined U-shaped pattern. One species, C. chinensis malleatus (Reeve, 1863) (Fig. Quilted Melania Sea snails, like land and freshwater snails, are gastropod molluscs. (Conrad, 1834). Length of shell 2.0-2.4 mm (Fig. The specie prefer quite clear water, of lakes and backwaters of streams andsprings. There are an estimated 60,000 – 80,000 species of gastropods, second only to the insects. 116a, 116b). File Campeloma Mimic Pondsnail Pilsbry, H. A. Euglandina rosea prefers snails to slugs, but will attack and consume small slugs in the absence of snail prey. (Thompson, 1968). 17, 29-32), shell usually banded in Florida forms. Description. Regal Hydrobe 161, 164, 167). 68). Height of shell about 14-16 mm; width, 10-12 mm (Figs. 140-146). Aperture loosely attached to or slightly free from preceding whorl. Operculum loosely coiled, with 3.75 large whorls, the outer one expanding more rapidly than the others (Figs. Umbilicus closed. Shell with spiral chords or spirally arranged series of nodes. Rock Springs Siltsnail Hershler, R. & F. G. Thompson. Shell with or without bands; slender; Suture deeply impressed; upper whorls with a strongly carinate periphery (Fig. Acad. They have a hollow area within the columella called the umbilicus; this umbilicus is visible and open. Outer lip of aperture with a thick callus on inner surface. Adequate preservation begins when the specimens are collected. Haitia bermudezi In others they are deposited in the water in gelatinous clusters. The COVID-19 Call Center is available 24/7 | 1 (866) 779-6121 | COVID-19@flhealth.gov. Maximum size around 1.5 inches wide. Vertical ribs reduced in size, but with bold spines at the periphery; spiral threads above periphery relatively weak; adults up to 35 mm long (Fig. Spire depressed, much less than height of aperture, occasionally planular (Figs. Penis with 4-6 papillae along right margin (Fig. Thompson, F. G. 1997. 34, 35) (Pomatiopsis, Fig. Last whorl flattened above. Identify your Florida Gulf Coast seashells! (Vanatta, 1934). Thompson, F. G. 1983. The ribs on the whorls are fine. Mihalcik, E. L. & F. G. Thompson. Aperture free from, or only in slight contact with, preceding whorl. Dusky Ancylid Micromenetus dilatatus avus (Pilsbry, 1905). 88). 35). 86). Recent studies treat amnicolids as a separate families. Apex subacute, distinctly eccentric to the right of the midline. Shell generally elliptical in outline. Peristome narrow to broadly ovate. Cockscomb Hydrobe Opercula should be glued to cotton plugs and replaced within the aperture. A preliminary revision of Florida Lioplax (Gastropoda: Viviparidae), with a description of Lioplax talquinensis n.sp. Apex fairly prominent as a rounded knob in the right posterior quadrant (Figs. 54). The shell is wider than it is tall, and has no siphonal canal. Spire raised and flat-topped. Shell elongate, thin, transparent, grayish. Lymnaeids are a nearly cosmopolitan family of freshwater snails. Vas deferens the only duct present in penis (Fig. Whelk squirts water . Banded Mysterysnail Shell about 0.38-0.41 times as wide as high and about 20-27 mm long. Shell short and stocky. Operculum nearly multispiral with four large, slowly expanding whorls (Fig. 111). Melanoides tuberculata Shell elliptical in shape. 10). Walkerana, 13: 1-108. Penis simple, elongate-conical, without papillae (Fig. A taxonomic revision of the feshwater snails referred to as Elimia curvicostata, and related secies. (C.B. Shell light brown and frequently mottled with rust-colored spots that may form a spiral row below the suture. The genus is difficult to diagnose by shell characters because the three species are very dissimilar. 170, 173). Nat. Operculum corneas, without pegs on inner or outer surface. 93). See the Report. Periphery of body whorl below middle, side of whorl flattened and sloping toward apex (Fig. Adult size small, about 12-16 mm long (Fig. 46). Atlantic triton's trumpet. Apex in about middle of shell. Choctaw Lioplax Schools & Childcare. Snails are food for a number of animals (fish, crabs, other snails, birds, humans) and herbaceous (plant-eating) snail species can … Some were range extensions for species known to occur in adjacent areas. Lobe and flagellum with various patterns of dermal glands (Fig. Whorls rounded, not carinate above; occasionally angular below. The number of subfanilies recognized in the Hydrobiida is unsettled. Umbilicus variable. Penis as illustrated (Fig. Outer lip straightened just below shoulder; straightened portion lying at an angle to axis of shell (Figs. It contains about a dozen species in North America. Inferior crest absent. Thick-lipped Rams-horn Gainesville, Florida 32611-7800. Shell relatively thick (Figs. (Say, 1829). 1918. Micromenetus d. dilatus 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. Shell medium-sized or large; 5.4-7.5 mm long; thick and opaque; ovate or globose; apical whorls depressed; sides of spire rounded; body whorl conspicuously enlarged, ample, rapidly descending to aperture along last half whorl. 131). Aphaostracon hypohyalina The criterion of inbreeding for defining species cannot be applied, and other objective criteria are not yet been established. About 4.2-4.6 weakly arched whorls with a weakly impressed suture. Atlantic gray cowrie. Cymbal Ancylid (Lea, 1834). CLICK ON EACH PHOTO . The Pleuroceridae of the Atlantic Coastal Plain. Clifton Spring Hydrobe Aphaostracon pycnus Diet:  This family primarily feeds upon surface-floating jellyfish such as the Portuguese Man o' War. Interesting Facts:  Also known as the Purple Storm Snails or the Violet Snails. (Linnaeus, 1758). Spiral angulation on whorls sharp and prominent in juveniles, usually becoming convex-rounded or smooth on last whorl in adults. 56). Shell larger, reaching a maximum diameter of 18 mm. Lyogyrus retromargo Shell globose or tear-shaped. Penis with papillae along right margin (Figs. 91). Stately Elimia (Pilsbry, 1890). In view of the inconsistency of these shell characters, these three forms may represent only a single species, Campeloma limum, which is widely distributed from the Escambia River system of Florida and Alabama east and north into North Carolina and Virginia. 17-29). Nuclear whorl 0.41 mm in diameter transverse to initial suture. Biomphalaria havanensis … (Mihalcik & Thompson, 2002). Shell dull. Shell variable in shape. Additional genera occur in the Orient, Southeast Asia, Africa, and South America. Taylor recognizes twenty-three genera based on the soft anatomy. (Reeve, 1860). Surface smooth or dented with hammer marks. 105, 106). Somatogyrus is distributed from the Mississippi River drainage system east to Atlantic coastal streams, and south to the Gulf coastal drainage systems. U-shaped superior crest not enclosing longitudinal crests. (Anthony, 1860). Distinguishing Characteristics: The Purple Sea Snails have thin, fragile white and purple shells. In Florida four types of Campeloma have been recognized. 66). (Thompson, 1968). 153). (Conrad, 1834). Shell thin, fragile, very much depressed, less than 0.25 times as high as long. 7-9). Shell moderately large, 3.7-4.5 mm long; spire 1.00-1.35 times length of aperture; shell with 4.8-5.4 whorls. The other three forms, C. limum (Anthony, 1860), C. floridense Call,1866 and C. parthenum Vail, 1979, are exclusively apomictic parthenogens and have been separated on the basis of aperture coloration, embryonic shell coloration, and contour of the outer lip (Vail 1979a). These toxins are now finding medical … 16, 22-28). Nautilus, 32: 71. Inferior crest usually present. 70). Snails belong to one of the largest classes of organisms, with over 40,000 recognized species. (Couper, 1844). (Thompson, 1968). (Walker, 1905). Suture relatively shallow. 132). Shell conical to ovate-conical. Apex about 0.4-0.5 times length of shell. This causes problems in species identification and yield an undermeasure of the actual number of species that exist in nature. Columellar margin of aperture very thick but not reflected over umbilical area (Fig.103). 97). Suture deeply impressed. Few of the North American species have been studied to the extent that their taxonomy, geographic distributions, life histories, and ecology are documented. Shell with about 4.5-5.0 whorls; about 3.0-4.8 mm long (Fig. Philadelphia, 134: 143-77. 63). Ponderous Siltsnail Prominent minor spiral sculpture along periphery. The Terebridae, commonly referred to as auger shells or auger snails, is a group or family of small to large predatory marine gastropods in the superfamily Conoidea. Others were new taxa not found in earlier surveys. Sculpture consisting of axial striations only (Fig.147). 12). Sexes not conspicuously dimorphic in size. Size small, discoidal, adults seldom exceeding 4 mm in width. Newborn shells brown. Two species occur in Florida. Operculum with concentric growth rings around nucleus (Figs. This genus contains three species. Floridobia is known from peninsular Florida north along the Atlantic seaboard to Maine. This guide should serve to teach the public how to identify local Central and South Florida gastropod seashells. 48). Whelk Egg case . Shell usually large, about 12-16 mm long. Shell cylindric-conical with 4.5-5.0 whorls. Te, G.A. Maximum size 2 inches. Carib Fossaria 159-161). 162-164). (Pilsbry and Beacher, 1892). (Haldeman, 1841). (Lea, 1962). Average length about 5.5 mm (Figs. Shell sculpture with incremental striations only. Body whorl uniformly rounded peripherally (Fig. 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. Umbilicus narrow, without a strong circum-umbilical ridge, outer lip without a callus on inner surface. Umbilicus wide (Fig. Melanoides turricula Two, Melanoides tuberculata and Tarebia granifera, are medically important because they can serve as first intermediate host for the human lung fluke, Paragonimus westermani. Shell coiled to the right, with the aperture on the right side (Figs. Aperture trapezoidal in shape; spire more robust, straight sided; with a shallower suture; parapical crest large (Fig. It should be remembered that it is only a key which emphasizes shell characters. Rock Fossaria Floridobia vanhyningi Operculum paucispiral, with about three rapidly expanding whorls (Fig. Base of shell usually without spiral band. Seminole Siltsnail By overlaying social and economic data on a map that depicts sea level rise, a community can see the potential impact that sea level rise can have on vulnerable people and businesses. Vertical ribs strongly developed, crossed by nearly equal sized spiral threads that form low spines where they cross the ribs, adults about 20-25 mm long (Fig. 137, 139). Females with an egg-laying groove or sinus on right side of foot; eggs deposited on substrate. (Lea, 1858). The planorbid snail Micromenetus dilatatus avus in the West Indies and Central America. Pyrgophorus platyrachis Body whorl strongly keeled as though pinched at the periphery (Figs. Periwinkle snail M-810 KEYHOLE LIMPET , Diodora aspera or other … Aperture large, oval, much more than half the length of shell. 4). Some species are dioecious with a normal representation of males and females. Shell variable in shape, elongate to globose; usually not more than 5 mm in length; apex of spire seldom eroded (except in Somatogyrus); 4-6 whorls; shell smooth (except in Pyrgophorus and Tryonia); central tooth of radula with basal cusps (Figs. Shell with 5.6-6.8 whorls; about 3.2-4.5 mm long (Fig. Travel increases your chance of getting and spreading COVID-19. Gulf Coast Pebblesnail) Somatogyrus walkerianus (Aldrich, 1905). Operculum with about 3 whorls (Fig. 40). Elimia athearni 1945. Pilsbry, H. A. High-Risk Populations. Last whorl distinctly shouldered. Escambia Elimia Apex flat with narrow threadlike keel. Lettuce sea slug. Henscomb Hydrobe Base of shell when viewed from below showing about half of preceding whorl due to straight basal lip (Fig. One species occurs naturally in Florida, and three others have been introduced. Embryonic shell with fine vertical ribs and a heavy spiral chord on periphery and two basal spiral chords (Fig. Shell without conical spines, although spiral threads may be present. Goldenhorn Marisa Radial striations present on shell but not on apex. Spire shorter, conical, 0.7-1.3 times length of aperture, nearly straight-sided in outline, suture of whorls weakly or moderately impressed. They display 6–7 whorls. Shell large, 4.0-4.6 mm long; thick and opaque. However, their outer beauty hides a deadly inner secret. 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. There is much disagreement as to how many species actually exist. 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. Base of shell regularly expanding, not funnel-shaped. Haitia cubensis Shell coiled to the left, with the aperture on the left side (Figs.147-158). Sea Base began in the early 1970’s as a local program in the Florida Keys called the Florida Gateway to High Adventure under the guidance of Sam Wampler, a professional Scouter from the South Florida … Littoridinops monroensis Viviparus contectoides limi, new name for V. c. compactus Pils. 1962. One to several dark growth-rest varixes usually present on last whorl. Ghost Rams-horn Prepared by Fred G. Thompson, Fmr. Choctaw Lioplax Thin and translucent or transparent. It is essential that clean specimens be examined under proper lighting to observe diagnostic sculpture characteristics. The entire length of the beach is covered in what looks like black rocks, but are in fact cerith snails. Rhapinema dacryon The following key includes all of the species that occur in Florida and some that occur in Alabama, Georgia, and South Carolina. Shell of various shapes and sculpture. Floridobia helicogyra 11). Aperture enlarged (dilated). 119). Shell unicolor, with distinct vertical sculpture in addition to strong spiral sculpture. Basch (1963) recognized five valid species.