Pyrgulopsis Pyrgulopsis milleri Pyrgulopsis californiensis Pyrgulopsis deserta Pyrgulopsis carinifera Pyrgulopsis aardahli Pyrgulopsis archimedis Pyrgulopsis bryantwalkeri Pyrgulopsis perforata Pyrgulopsis arizonae Duckwater pyrg Huachuca springsnail Pyrgulopsis castaicensis Gila springsnail Pyrgulopsis blainica Pyrgulopsis licina Pyrgulopsis sanchezi Kingman springsnail Montezuma Well springsnail Phantom cave snail Chupadera springsnail Fairbanks springsnail Corded purg Moapa pebblesnail Brown springsnail Pyrgulopsis bedfordensis Grand Wash springsnail Crystal Spring springsnail Davis County springsnail Ash Meadows pebblesnail …

Jackson lake springsnail Page springsnail Roswell springsnail Bruneau hot springsnail Fossil springsnail Pecos springsnail Distal-gland springsnail San Bernardino springsnail New Mexico hotspring snail Pyrgulopsis minkleyi South Sierra Nevada springsnail Transverse grand pyrg Three Forks springsnail Elongate-gland springsnail Socorro springsnail Verde Rim springsnail Median-gland Nevada springsnail Oasis Valley springsnail Amargosa springsnail Naegele springsnail Marstonia scalariformis Marstonia pachyta Marstonia olivacea Marstonia castor Marstonia ozarkensis Marstonia ogmorhaphe Marstonia agarhecta