Hershler, R., Frest, T. J., Johannes, E. J., Bowler, P. A. & Thompson, F. G. (1994). Two new genera of hydrobiid snails (Prosobranchia: Rissooidea) from the northwestern United States. The Veliger. 37(3): 221-243.
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Hershler, R., Frest, T. J., Johannes, E. J., Bowler, P. A. & Thompson, F. G.
1994
Two new genera of hydrobiid snails (Prosobranchia: Rissooidea) from the northwestern United States