WAtalacmea
WAtalacmea fragilis
WAtalacmea multilinea
WDiscurria
WDiscurria insessa
WErginus galkini
WErginus rubellus
WLottia antillarum
WLottia cassis
WLottia cubensis
WLottia dorsuosa
WLottia fenestrata
WLottia filosa
WLottia jamaicensis
WLottia langfordi
WLottia leucopleura
WLottia limatula
WLottia luchuana
WLottia mesoleuca
WLottia onychitis
WLottia orbignyi
WLottia persona
WLottia septiformis
WNipponacmea concinna
WNipponacmea fuscoviridis
WNipponacmea nigrans
WNiveotectura
WNiveotectura pallida
WNotoacmea elongata
WNotoacmea flammea
WNotoacmea petterdi
WNotoacmea pileopsis
WNotoacmea scopulina
WPatelloida
WPatelloida alticostata
WPatelloida corticata
WPatelloida heroldi
WPatelloida insignis
WPatelloida latistrigata
WPatelloida lentiginosa
WPatelloida nigrosulcata
WPatelloida pygmaea
WPatelloida saccharina
WPatelloida saccharinoides
WPatelloida striata
WScurria
WScurria ceciliana
WScurria parasitica
WScurria plana
WScurria variabilis
WScurria viridula
WScurria zebrina
WTectura
WTectura palacea
WTestudinalia