PhysidaeW
Physidae
AplexaW
Aplexa
Aplexa hypnorumW
Aplexa hypnorum
Aplexa rivalisW
Aplexa rivalis
Banff Springs snailW
Banff Springs snail
MayabinaW
Mayabina
MexinautaW
Mexinauta
PhysaW
Physa
Physa fontinalisW
Physa fontinalis
Physa marmorataW
Physa marmorata
PhysellaW
Physella
Physella acutaW
Physella acuta
Physella gyrinaW
Physella gyrina