WAgladrillia rhodochroa is a species of sea snail, a marine gastropod mollusk in the family Drilliidae.
WAmphidromus similis is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Camaenidae.
WAmpullaria bicarinata is an extinct species of freshwater snail with an operculum, an aquatic gastropod mollusk in the family Ampullariidae.
WAnarithma sublachryma is a species of sea snail, a marine gastropod mollusk in the family Mitromorphidae.
WAustromitra canaliculata is a species of small sea snail, marine gastropod mollusk in the family Costellariidae, the ribbed miters.
WColpospira atkinsoni is a species of sea snail, a marine gastropod mollusk in the family Turritellidae.
WConus grangeri, common name Granger's cone, is a species of sea snail, a marine gastropod mollusk in the family Conidae, the cone snails and their allies.
WCrassispira boadicea is an extinct species of sea snail, a marine gastropod mollusk in the family Pseudomelatomidae, the turrids and allies.
WCrassispira chazaliei is a species of sea snail, a marine gastropod mollusk in the family Pseudomelatomidae.
WCrassispira glaphyrella is an extinct species of sea snail, a marine gastropod mollusk in the family Pseudomelatomidae, the turrids and allies. Fossils have been found in Eocene strata in Lower Normandy, France.
WCrassispira glaphyrella is an extinct species of sea snail, a marine gastropod mollusk in the family Pseudomelatomidae, the turrids and allies. Fossils have been found in Eocene strata in Lower Normandy, France.
WFusinus bifrons is a species of sea snail, a marine gastropod mollusk in the family Fasciolariidae, the spindle snails, the tulip snails and their allies.
WImpages apicitincta is a species of sea snail, a marine gastropod mollusk in the family Terebridae, the auger snails.
WLeiocithara potti is a species of sea snail, a marine gastropod mollusk in the family Mangeliidae.
WLioglyphostoma jousseaumei is a species of sea snail, a marine gastropod mollusk in the family Pseudomelatomidae, the turrids.
WLucapinella henseli is a species of sea snail, a marine gastropod mollusk in the family Fissurellidae, the keyhole limpets and slit limpets.
WLutilodix imitratrix is a species of air-breathing land snail or semislug, terrestrial pulmonate gastropod mollusk in the family Helicarionidae. This species is endemic to Norfolk Island.
WMelanella hypsela is a species of sea snail, a marine gastropod mollusk in the family Eulimidae. The species is one of a number within the genus Melanella.
WMitromorpha fischeri is a species of sea snail, a marine gastropod mollusk in the family Mitromorphidae.
WMitromorpha pinguis is a species of sea snail, a marine gastropod mollusk in the family Mitromorphidae.
WMuricopsis (Muricopsis) necocheana is a species of sea snail, a marine gastropod mollusk in the family Muricidae, the murex snails or rock snails.
WOdostomia hilgendorfi is a species of sea snail, a marine gastropod mollusk in the family Pyramidellidae, the pyrams and their allies.
WOdostomia krausei is a species of sea snail, a marine gastropod mollusk in the family Pyramidellidae, the pyrams and their allies.
WOdostomia lubrica is a species of sea snail, a marine gastropod mollusk in the family Pyramidellidae, the pyrams and their allies.
WOdostomia panamensis is a species of sea snail, a marine gastropod mollusk in the family Pyramidellidae, the pyrams and their allies.
WOdostomia sitkaensis is a species of sea snail, a marine gastropod mollusk in the family Pyramidellidae, the pyrams and their allies.
WOvachlamys fulgens is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Helicarionidae.
WParadrillia nannodes is a species of sea snail, a marine gastropod mollusk in the family Horaiclavidae.
WPhyllaplysia taylori, synonym Phyllaplysia zostericola, common names the "eelgrass sea hare" and "Taylor's sea hare", is a species of sea slug, specifically a sea hare, a marine gastropod mollusk in the family Aplysiidae, the sea hares.
WPunctum blandianum is a species of minute air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Punctidae, the dot snails.
WRadiodiscus patagonicus is a minute species of air-breathing land snail, a terrestrial gastropod mollusk or micromollusk in the family Charopidae.
WRaphitoma lennieri is an extinct species of sea snail, a marine gastropod mollusc in the family Raphitomidae.
Siphonalia pfefferi, common name Pfeffer's whelk, is a species of sea snail, a marine gastropod mollusk in the family Buccinidae, the true whelks.
WTurbonilla valida is a species of sea snail, a marine gastropod mollusk in the family Pyramidellidae, the pyrams and their allies.