> Fontigens morrisoni  Hershler et al. 1990
  
> Habitat & Distribution
This small hydrobiid is apparently endemic to Bath and Highland Counties of Virginia.  Hershler and his colleagues (1990) reported Fontigens morrisoni from two springs and two caves in the area, although at least one of the cave localities is obscure.  The springs at Mustoe seem to support high densities of the species, on vegetation and organic debris.

> Ecology & Life history
I am not aware of any good study on the life history of Fontigens.  But populations typically seem to maintain high densities year round, as though reproduction might be continuous.  The springs inhabited by Fontigens morrisoni seem to be rich and hard.  

> Taxonomy & Systematics
This is among the rarer and more obscure of the nine species of Fontigens monographed by Hershler et al. (1990).  Its taxonomy is stable. 

>References
Hershler, R., J.R. Holsinger & L. Hubricht (1990) A revision of the North American freshwater snail genus Fontigens (Prosobranchia: Hydrobiidae). Smithsonian Contributions to Zoology 509: 1-49.  Stewart, T. W., & R. T. Dillon, Jr.  (2004)  Species composition and geographic distribution of Virginia's freshwater gastropod fauna: A review using historical records.  Am. Malac. Bull. 19: 79-91.