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

l Pecos springsnail New Mexico hotspring snail Pyrgulopsis minkleyi San Bernardino springsnail South Sierra Nevada springsnail Distal-gland springsnail Transverse grand pyrg Elongate-gland springsnail Three Forks springsnail Median-gland Nevada springsnail Verde Rim springsnail Oasis Valley springsnail Socorro springsnail Naegele springsnail Amargosa springsnail Marstonia scalariformis Marstonia pachyta Marstonia oliv

acea Marstonia castor Marstonia ozarkensis Marstonia agarhecta Marstonia ogmorhaphe