WAbida occidentalis is a species of land snail in the family Chondrinidae.
WAgathotoma castellata is a species of sea snail, a marine gastropod mollusk in the family Mangeliidae.
WAgladrillia fuegiensis is a species of sea snail, a marine gastropod mollusk in the family Drilliidae.
WAnteaeolidiella indica is a species of sea slug, an aeolid nudibranch. It is a marine gastropod mollusc in the family Aeolidiidae.
WBaeolidia moebii is a species of sea slug, an aeolid nudibranch, a marine gastropod mollusk in the family Aeolidiidae.
WBistolida diauges, common name: the square-spotted cowry or translucent stolida, is a species of sea snail, a marine gastropod mollusk in the family Cypraeidae, the cowries.
WBithynia fuchsiana is a species of small freshwater snail with a gill and an operculum, an aquatic gastropod mollusk in the family Bithyniidae.
WCalliostoma aurora, common name the dawn top shell, is a species of sea snail, a marine gastropod mollusk in the family Calliostomatidae.
WCyclostrema archeri is a species of sea snail, a marine gastropod mollusk in the family Liotiidae.
WCyclostrema dunkeri is a species of small sea snail, a marine gastropod mollusk, in the family Liotiidae.
WCyclostrema subexcavatum is a species of sea snail, a marine gastropod mollusk in the family Liotiidae.
WDermatobranchus fortunatus is a species of sea slug, a nudibranch, a marine gastropod mollusc in the family Arminidae.
WDermatobranchus ornatus is a species of sea slug, a nudibranch, a marine gastropod mollusc in the family Arminidae.
WDiscodoris coerulescens is a species of sea slug, a dorid nudibranch, shell-less marine opisthobranch gastropod mollusks in the family Discodorididae.
WDoto floridicola is a species of sea slug, a Dendronotid nudibranch, a marine gastropod mollusc in the family Dotidae.
WDrillia dejecta is a species of sea snail, a marine gastropod mollusc in the family Drilliidae.
WEntocolax ludwigii is a species of parasitic sea snail, a marine gastropod mollusk in the family Eulimidae. The species is notable for being commonly misspelled as Entocolax ludwigi, this was the original name for this species of Caenogastropoda, the incorrect name was corrected shortly after Voigt gave the taxonomic name for this species in 1888.
WEthminolia degregorii is a species of sea snail, a marine gastropod mollusk in the family Trochidae, the top snails.
WEthminolia doriae is a species of sea snail, a marine gastropod mollusk in the family Trochidae, the top snails.
WFacelinopsis marioni is a species of sea slug, an aeolid nudibranch, a marine gastropod mollusc in the family Facelinidae.
WGudeodiscus villedaryi is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Plectopylidae.
WHomalopoma tapparonei is a species of small sea snail with calcareous opercula, a marine gastropod mollusk in the family Colloniidae.
WLeucorhynchia crossei is a species of sea snail, a marine gastropod mollusk in the family Skeneidae.
WLeucosyrinx subgrundifera is a species of sea snail, a marine gastropod mollusk in the family Pseudomelatomidae, the turrids.
WMariaella beddomei is a species of air-breathing land slug, a terrestrial pulmonate gastropod mollusk in the family Ariophantidae.
WMinolia caifassii is a species of sea snail, a marine gastropod mollusk in the family Solariellidae.
Monetaria caputdraconis, common name the "dragon's-head cowry", is a species of sea snail, a cowry, a marine gastropod mollusk in the family Cypraeidae, the cowries.
WMonilea pantanellii is a species of sea snail, a marine gastropod mollusk in the family Trochidae, the top snails.
WMoridilla brockii is a species of sea slug, an aeolid nudibranch, a marine gastropod mollusc in the family Facelinidae.
WNaria nebrites, common name the false margined cowry, is a species of sea snail, a cowry, a marine gastropod mollusk in the family Cypraeidae, the cowries.
WOvatipsa coloba is a species of sea snail, a cowry, a marine gastropod mollusk in the family Cypraeidae, the cowries.
Paradusta hungerfordi, common name Hungerford's cowry, is a species of sea snails, marine gastropod mollusks in the family Cypraeidae, the cowries.
WPowelliphanta lignaria, known as one of the amber snails, is a species of large, carnivorous land snail, a terrestrial pulmonate gastropod mollusc in the family Rhytididae. The eggs of P. lignaria are oval and seldom constant in dimensions 10 × 8.25, 9 × 7.75, 9 × 8, 8.75 × 7.75 mm.
WProtatlanta souleyeti is a species of sea snail, a holoplanktonic marine gastropod mollusk in the family Atlantidae.
WPseudorhaphitoma brionae is a small sea snail, a marine gastropod mollusk in the family Mangeliidae.
WRugulina verrilli is a species of sea snail, a marine gastropod mollusk in the family Pendromidae.
WSkenea proxima is a species of sea snail, a marine gastropod mollusk in the family Skeneidae.
WSyntomodrillia cookei is a species of sea snail, a marine gastropod mollusk in the family Drilliidae.
WTalostolida pellucens is a species of sea snail, a cowry, a marine gastropod mollusk in the family Cypraeidae, the cowries.
WTenaturris fulgens is a species of sea snail, a marine gastropod mollusk in the family Mangeliidae.
WTurbo heterocheilus is a species of sea snail, marine gastropod mollusk in the family Turbinidae.
WVaceuchelus delpretei is a species of sea snail, a marine gastropod mollusk in the family Chilodontidae.
WYaronia gestroi is a species of sea snail, a marine gastropod mollusk in the family Colloniidae.