Pyrgulopsis
Pyrgulopsis milleri
Pyrgulopsis deserta
Pyrgulopsis californiensis
Pyrgulopsis carinifera
Pyrgulopsis bryantwalkeri
Huachuca springsnail
Pyrgulopsis aardahli
Pyrgulopsis archimedis
Kingman springsnail
Duckwater pyrg
Pyrgulopsis blainica
Pyrgulopsis sanchezi
Pyrgulopsis castaicensis
Gila springsnail
Pyrgulopsis perforata
Pyrgulopsis arizonae
Montezuma Well springsnail
Pyrgulopsis licina
Moapa pebblesnail
Chupadera springsnail
Brown springsnail
Pyrgulopsis bedfordensis
Phantom cave snail
Grand Wash springsnail
Crystal Spring springsnail
Corded purg
Jackson lake springsnail
Davis County springsnail
Page springsnail
Ash Meadows pebblesnail
Fairbanks springsnail
Roswell springsnail
Transverse grand pyrg
Fossil springsnail
San Bernardino springsnail
Pyrgulopsis minkleyi
Bruneau hot springsnail
Pecos springsnail
New Mexico hotspring snail
South Sierra Nevada springsnail
Elongate-gland springsnail
Distal-gland springsnail
Verde Rim springsnail
Median-gland Nevada springsnail
Oasis Valley springsnail
Naegele springsnail
Three Forks springsnail
Amargosa springsnail
Socorro springsnail
Marstonia scalariformis
Marstonia pachyta
Marstonia olivacea
Marstonia castor
Marstonia ozarkensis
Marstonia ogmorhaphe
Marstonia agarhecta