WHelicidae
WAllognathus
WAllognathus campanyonii
WAllognathus hispanicus
WArianta
WArianta arbustorum
WCantareus
WCaucasotachea
WCaucasotachea vindobonensis
WCausa
WCausa holosericea
WCepaea
WChilostoma
WChilostoma faustina
WCorneola
WCornu aspersum
WEobania
WEobania vermiculata
WEremina
WEremina desertorum
WGrove snail
WHelicigona
WHelicigona lapicida
WHelix (gastropod)
WHelix albescens
WHelix asemnis
WHelix cincta
WHemicycla
WHemicycla inutilis
WIberus
WIsognomostoma
WIsognomostoma isognomostomos
WLampadia
WLampadia webbiana
WLevantina
WLevantina bellardi
WLevantina guttata
WLevantina rechingeri
WMacularia
WMacularia sylvatica
WMarmorana
WMarmorana platychela
WMarmorana serpentina
WMassylaea
WOtala
WOtala lactea
WOtala punctata
WPseudotachea
WRossmaessleria
WTacheocampylaea
WTheba
WTheba arinagae
WTheba pisana
WTyrrhenaria
WTyrrhenaria ceratina
WWhite-lipped snail
WXeroleuca