The phantom cave snail or phantom cavesnail is a species of very small freshwater snail with an operculum, an aquatic gastropod in the family Hydrobiidae.
The Moapa pebblesnail also known as the Muddy Valley turban snail, scientific name Pyrgulopsis avernalis, is a species of small freshwater snail with an operculum, an aquatic gastropod mollusk in the family Hydrobiidae.
Pyrgulopsis is a genus of freshwater snails with a gill and an operculum, aquatic gastropod mollusks in the family Hydrobiidae.
The Duckwater pyrg, scientific name Pyrgulopsis aloba, is a species of freshwater snail in the family Hydrobiidae. It is endemic to the United States and only known from two springs in the Duckwater Reservation, Nye County, Nevada.
The Grand Wash springsnail is a species of freshwater snail in the family Hydrobiidae, the mud snails. It is endemic to Mohave County, Arizona, in the United States.
The Chupadera springsnail, scientific name Pyrgulopsis chupaderae, is a species of minute freshwater snails with an operculum, aquatic gastropod molluscs or micromolluscs in the family Hydrobiidae.
The Kingman springsnail is a species of freshwater snail in the family Hydrobiidae, the mud snails. It is endemic to Mohave County, Arizona, in the United States.
The Crystal Spring springsnail, scientific name Pyrgulopsis crystalis, is a species of small freshwater snail, an aquatic gastropod mollusk in the family Hydrobiidae.
The Davis County springsnail, scientific name Pyrgulopsis davisi, is a species of small freshwater snails with a gill and an operculum, aquatic gastropod mollusk in the family Hydrobiidae.
The Ash Meadows pebblesnail is a species of freshwater snail with a gill and an operculum, aquatic gastropod mollusk in the family Hydrobiidae.
The Fairbanks springsnail, scientific name Pyrgulopsis fairbanksensis, is a species of minute freshwater snails with an operculum, aquatic gastropod molluscs or micromolluscs in the family Hydrobiidae.
The Gila springsnail, scientific name Pyrgulopsis gilae, is a species of freshwater snail with an operculum, an aquatic gastropod mollusk in the family Hydrobiidae.
The South Sierra Nevada springsnail, scientific name Pyrgulopsis giuliani, is a species of very small freshwater snail with an operculum, an aquatic gastropod mollusk in the family Hydrobiidae.
The Oasis Valley springsnail, scientific name Pyrgulopsis micrococcus, is a species of minute freshwater snails with an operculum, aquatic gastropod molluscs or micromolluscs in the family Hydrobiidae.
The Montezuma Well springsnail is a species of freshwater snail in the family Hydrobiidae, the mud snails. It is endemic to Montezuma Well, a large sinkhole in Yavapai County, Arizona, in the United States.
The corded purg, scientific name Pyrgulopsis nevadensis, is an extinct species of freshwater snail with a gill and an operculum, an aquatic gastropod mollusk in the family Hydrobiidae.
The Roswell springsnail, scientific name Pyrgulopsis roswellensis, is a species of small freshwater snail, an aquatic gastropod mollusc in the family Hydrobiidae. This species is endemic to Roswell, New Mexico in the United States.
The brown springsnail, scientific name Pyrgulopsis sola, is a species of very small freshwater snail that has a gill and an operculum, an aquatic gastropod mollusk in the family Hydrobiidae. This species is endemic to Arizona, the United States.
The Huachuca springsnail scientific name Pyrgulopsis thompsoni, is a species of very small freshwater snail with an operculum, an aquatic gastropod mollusk in the family Hydrobiidae.
