WAbida attenuata is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusc in the family Chondrinidae.
WAlvania euchila is a species of minute sea snail, a marine gastropod mollusk or micromollusk in the family Rissoidae.
WCalliotropis glypta is a species of sea snail, a marine gastropod mollusk in the family Eucyclidae.
WCeratosoma amoenum, or the clown nudibranch, is a species of colorful dorid nudibranch, a sea slug, a shell-less marine gastropod mollusk in the family Chromodorididae.
WCingulina isseli is a species of sea snail, a marine gastropod mollusk in the family Pyramidellidae, the pyrams and their allies.
WClea hidalgoi is a Southeast Asian species of freshwater snail with an operculum, an aquatic gastropod mollusk in the family Nassariidae, most of which are marine.
WColumbella rusticoides is a species of sea snail, a marine gastropod mollusk in the family Columbellidae, the dove snails.
WConasprella agassizi is a species of sea snail, a marine gastropod mollusk in the family Conidae, the cone snails and their allies.
WCryptogemma phymatias is a species of sea snail, a marine gastropod mollusk in the family Turridae, the turrids.
WDiala albugo is a species of sea snail, a marine gastropod mollusk in the family Dialidae.
WDolicholatirus bairstowi is a species of sea snail, a marine gastropod mollusk in the family Fasciolariidae, the spindle snails, the tulip snails and their allies.
WEpidirella xanthophaes is a species of sea snail, a marine gastropod mollusk in the family Turridae, the turrids.
WGymnobela homoeotata is a species of sea snail, a marine gastropod mollusk in the family Raphitomidae.
WGymnobela phyxanor is a species of sea snail, a marine gastropod mollusk in the family Raphitomidae.
WHalongella schlumbergeri is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Plectopylidae.
Hystrivasum horridum, common name the rough or shaggy vase, is a fossil species of medium-sized predatory gastropod in the family Turbinellidae. This species is extinct and is found in the Pleistocene deposits of Florida.
WInchoatia haussknechti is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Clausiliidae, the door snails.
WLatirus rousi is a species of sea snail, a marine gastropod mollusk in the family Fasciolariidae, the spindle snails, the tulip snails and their allies.
WMargarya francheti is a species of large operculate freshwater snail, an aquatic gastropod mollusk in the family Viviparidae, the river snails.
WMarginella bairstowi is a species of sea snail, a marine gastropod mollusk in the family Marginellidae, the margin snails.
WMilda garretti is a species of sea snail, a marine gastropod mollusk in the family Pyramidellidae, the pyrams and their allies.
WMiralda scopulorum is a species of sea snail, a marine gastropod mollusk in the family Pyramidellidae, the pyrams and their allies.
WNassodonta dorri is a species of brackish water snail, with gills and an operculum, a gastropod mollusk in the family Nassariidae, the nassa mud snails or dog whelks.
WNatica seychellium is a species of predatory sea snail, a marine gastropod mollusk in the family Naticidae, the moon snails.
WNquma rousi is a species of sea snail, a marine gastropod mollusk in the family Horaiclavidae.
WOenopota koreni is a species of sea snail, a marine gastropod mollusk in the family Mangeliidae.
WOenopota lutkeana is a species of sea snail, a marine gastropod mollusk in the family Mangeliidae.
WOxyloma sarsii is a species of small European land snail, a terrestrial pulmonate gastropod mollusk belonging to the family Succineidae, the amber snails.
WPandalosia ephamilla is a species of minute sea snail, a marine gastropod mollusk or micromollusk in the family Zebinidae.
WPeristernia fuscotincta is a species of sea snail, a marine gastropod mollusk in the family Fasciolariidae, the spindle snails, the tulip snails and their allies.
WPhilbertia cala is a species of sea snail, a marine gastropod mollusk in the family Raphitomidae.
WPropebela bergensis is a species of sea snail, a marine gastropod mollusk in the family Mangeliidae.
WPropebela spitzbergensis is a species of sea snail, a marine gastropod mollusk in the family Mangeliidae.
WPyrgophorus spinosus, common name the spiny crownsnail, is a species of very small freshwater snail with a gill and an operculum, an aquatic gastropod mollusk in the family Hydrobiidae.
WSetia amabilis is a species of minute sea snail, a marine gastropod mollusk or micromollusk in the family Rissoidae.
WSolariella rhina is a species of sea snail, a marine gastropod mollusk in the family Eucyclidae.
WSpirotropis aganactica is a species of sea snail, a marine gastropod mollusk in the family Drilliidae.
WStenodrillia horrenda is a species of sea snail, a marine gastropod mollusk in the family Drilliidae.
WSyrnola adamsi is a species of sea snail, a marine gastropod mollusk in the family Pyramidellidae, the pyrams and their allies.
Theodoxus euxinus is a species of small freshwater snail with a gill and an operculum, an aquatic gastropod mollusk in the family Neritidae, the nerites.
WTiberia paumotensis is a species of minute sea snail, a marine gastropod mollusk in the family Pyramidellidae, the pyrams and their allies.
WTurbo cernicus is a species of sea snail, a marine gastropod mollusk in the family Turbinidae, the turban snails.
WTurbo smithi, common name the miniature turban, is a species of sea snail, a marine gastropod mollusk in the family Turbinidae, the turban snails.
WVaceuchelus scrobiculatus is a species of sea snail, a marine gastropod mollusk in the family Chilodontidae.
WWattebledia crosseana is a species of freshwater snail with a gill and an operculum, an aquatic gastropod mollusk in the family Bithyniidae.
WXanthodaphne membranacea is a species of sea snail, a marine gastropod mollusk in the family Raphitomidae.
WXanthodaphne xanthias is a species of sea snail, a marine gastropod mollusk in the family Raphitomidae.
WXerocrassa ripacurcica is a species of air-breathing land snail, a pulmonate gastropod mollusk in the family Hygromiidae, the hairy snails and their allies. This species is native to France and Spain.