The Index[A][B][C][D][E][F][G][H][I][J][K][L][M][N][O][P][Q][R][S][T][U][V][W][Y][Z]
N Nata vernicosa Nata viridescens Natalina beyrichi Natalina cafra Natalina quekettiana Natalina wesseliana Neohelix dentifera Neritina canalis Neritina macgilluraji Neritina petitii Neritina porcata Neritina pulligera Neritina squamaepicta Neritina tahitiensis Neritina turrita Neritina turtoni Neritina variegata Neritoidea Nesopupa malayana Nesopupa nannodes Nesovitrea burringtoni Nesovitrea electrina Nesovitrea hammonis Nesovitrea virginica
O Obba bigonia Obba horizontalis Obba listeri Obba mesai Obba moricandi Obba rota Odontostomidae Odontostomus odontostomus Odontostomidae,species Opeas hannense Opeas pumilum Orcula dolium Orcula gularis Orculidae Oreohelicidae Oreohelix hemphilli Oreohelix idahoensis Oreohelix strigosa Oreohelix subrudis Orthalicidae Orthalicus floridensis Orthalicus undatus Otala lactea Otala punctata Ovatella denticulata Ovatella myosotis Oxychilus alliarius Oxychilus cellarius Oxychilus draparnaudi Oxychilus helveticus Oxyloma elegans
P Pagodulina pagodula Pallifera dorsalis Pallifera fosteri Pallifera marmorea Pallifera ragsdalei Pallifera tournescalis Papillifera papillaris Papillifera solida Paravitrea clappi Paravitrea lamellidens Paravitrea multidentata Paravitrea significans Paropeas achatinaceum Paropeas acutissimum Partula faba Partula gibba Partula radiolata Partula salifana Partula varia Partuloidea Pellucid snail Perforatella bidentata Perforatella incarnata Perforatella rubiginosa Perforatella subrufescens Perforatella umbrosa Perforatella ventouxiana Perforatella vicina Phenocolimax annularis Phenocolimax glacialis Phenocolimax major Philomycus carolianus Philomycus carolianus flexuolaris Physa fontinalis Physella acuta Pila africana Pila cecillei Pila occidentalis Pila ovata Pila speciosa Pila wernei Pila ampullacea Pila angelica Pila globosa Pila gracilis Pila pesmei Pila polita Planorbarius(Planorbus) corneus Planorbella campanula Planorbella scalaris Planorbella trivolvis Planorbella tenuis Planorbidae Planorbis carinatus Planorbis planorbis Pleikocheilus tricolor Polygyra auriculata Polygyra cereolus Polygyra jacksoni Polygyra leporina Polygyra plicata Polygyra pustula Polygyra pustuloides Polygyra plana Polygyra septemvolva Polygyra texasiana Polygyra triodontoides Polygyrella polygyrella Polygyridae Pomacea Pomacea bridgesi Pomacea canaliculata Pomacea flagellata Pomacea glauca Pomacea haustrum Pomacea insularum Pomacea lineata Pomacea maculata Pomacea paludosa Pomacea papyracea Pomacea poeyana Pomacea sordida Pomacea urceus Pomatias elegans Pomatias sulcatus Pomatiasidae Potamopyrgus antipodorum Poteriidae Praticolella griseola Prickly snail Pristiloma arcticum Pristiloma johnsoni Pristiloma lansingi Pristiloma stearnsi Prophysaon andersoni Prophysaon dubium Prophysaon foliolatum Prophysaon humile Prophysaon vanattae Pseudoplecta bijuga Pseudotachea splendida Pupilla fontana Pupilla muscorum Pupilla tetrodus Pupillidae Pupinidae Pupisoma circumlitum Pupisoma orcella Pupisoma orcula Pupoides calaharicus Pyramidulidae Pyramidula rupestris Pyrenaeria carascalensis Pythia imperforata Pythia pantherina Pythia undata
R Rhachistia chiradzuluensis Rachistia dubiosa Rachis jejuna Rhachistia sticta Rabdotus dealbatus Radix auricularia Radix ovata Rammshorn snails Rathousiidae Renea veneta Rhinocochlis nasuta Rhiostoma asiphon Rhiostoma chupingense Rhiostoma samuiense Ribbed Grass Snail Rounded snail Round Mouthed snail Rumina decollata
S Sandhill snail Saulea vitrea Semilimax kotulae Semilimax pyrenaicus Semilimax semilimax Sheldonia cornea Sheldonia inuncta Sheldonia leucospira Sheldonia poeppigi Sheldonia transvaalensis Sigmurethra Smooth snail Smooth Grass Snail Solatopupa similis Sonorella ashmuni Sonorella caerulifluminis Sonorella eremita Sonorella galiurensis Sonorella hatchitana Sonorella imitator Sonorella macrophallus Sonorella tortelita Sonorella walkeri Sphyradium doliolum Spermodea lamellata Sphincterochila candidissima Sphincterochilidae Spiraxidae Stagnicola palustris Stenotrema hirsutum Stenotrema magnifosum Stenotrema monodon Stenotrema stenotrema Strawberry snail Streptaxidae Striatura exigua Striatura milium Striatura pugetensis Strobilopsidae Strobilops aenus Strobilops labyrinthicus Strophocheiloidea Stylommatophora Subulina octona Subulina striatella Subulinidae Succineidae Succinea oblonga Succinea putris
T Testacella haliotidea Testacella maugei Testacella scutulum Testacellidae Tetrentodon palenquensis Thaumastus jelskii Theba pisana Thersites rawnesleyi Trachystis aenea Trachystis ariel Trachystis burnupi Trachystis conisalea Trachystis glanvilleana Trachystis inclara Trachystis loveni Trachystis subpinguis Trichia hispida Trichia plebeia Trichia striolata Trichia unidentata Trimmuscilidea Triodopsis albolabris Triodopsis denotata Triodopsis dentifera Triodopsis fallax Triodopsis fosteri Triodopsis hopetonensis Triodopsis juxtidens Triodopsis tridentata Trochoidea elegans Trochoidea pyramidata Troichoidea trochoides Tropidophora insularis Tropidophora ligata Truncatellinae Truncatellina callicratis Truncatellina cylindrica Truncatella guerinii
U Udosarx lyrata Urocoptidae Urocoptis cylindrus Urocoptis vignalensis Urocyclus kirki
V Vallonia costata Vallonia excentrica Vallonia perspectiva Vallonia pulchella Vallonidae Valloniinae Valvatidae Valvata piscinalis Valvata cristata Ventridens cerinoideus Ventridens collisella Ventridens demissus Ventridens gularis Ventridens ligera Veronacellidae Vertiginidae Vertigininae Vertigo angustior Vertigo antivertigo Vertigo elatior Vertigo lilljeborgi Vertigo modesta Vertigo ovata Vertigo pusilla Vertigo pygmaea Vertigo ronnebyensis Vertigo substriata Vestia turgida Videna bicolor Vitrea contracta Vitrea subrimata Vitrinidae Vitrina pellucida Vitrinobrachum breve Vitrinops fruhstorferi Viviparacea Viviparidae Viviparus contectus Viviparus georgianus Viviparus japonicus Viviparus malleatus Viviparus viviparus
W Webbhelix multilineata Wrinkled snail
Z Zacoleus idahoensis Zachrysia provisoria Zebrina detrita Zonites algirus Zonitidae Zonitinae Zonitoides excavatus Zonitoides nitidus Zoogenetes harpa