WPotamididae
WCerithidea
WCerithidea balteata
WCerithidea decollata
WCerithidea obtusa
WCerithidea quoyii
WCerithidea rhizophorarum
WCerithideopsilla
WCerithideopsilla conica
WPirenella incisa
WCerithideopsis californica
WCerithideopsis montagnei
WCerithideopsis pliculosa
WCerithideopsis scalariformis
WPirenella
WPirenella alata
WPirenella cingulata
WPotamides (gastropod)
WPotamides archiaci
WTelescopium (gastropod)
WTelescopium telescopium
WTerebralia
WTerebralia palustris
WTerebralia semistriata
WTerebralia sulcata
WTympanotonos
WTympanotonos fuscatus