WHelicinidae
WAlcadia
WAlcadia conuloides
WAlcadia maxima
WBourciera
WEutrochatella
WEutrochatella tankervillii
WGeophorus
WGeophorus agglutinans
WHelicina
WHelicina aspersa
WHelicina fasciata
WHelicina guppyi
WHelicina platychila
WHelicina rhodostoma
WHelicina rostrata
WLucidella
WNesiocina
WOgasawarana
WOgasawarana microtheca
WOgasawarana yoshiwarana
WPalaeohelicina
WUstronia
WUstronia sloanei
WViana (gastropod)
WVianinae