58 UNIVERSITY OF COLORADO STUDIES 



Vertigo coloradensis basidens Pilsbry and Vanatta. 



Ouray (Bethel); Rio Blanco and Buford (Henderson). Probably the previous 

 records of V. gouldi belong here and gouldi should be eliminated from our faunal list, 

 but there is no way of now determining it. 



Vertigo milium Gould. 



Kremmling (Cockerell, Nautilus, Vol. Ill, p. 21). This record was inadvertently 

 omitted from Part II of this catalogue. 



Genus COCHLICOPA (Fer.) Risso 

 Cochlicopa lubrica Miiller. 



Lake George near Florissant, and Copeland Park in Boulder County, at 7,500 feet 

 (S. A. Rohwer); Denver and Sulphur Springs (Bethel); near Magnolia at 8,500 feet 

 (Henderson). 



Genus VALLONIA Risso 

 Vallonia pulchella Miiller. 



Ft. Collins (Bragg, Congdon). Specimens were sent in for identification in 1909, 

 with the information that they had appeared in great numbers. There were no specimens 

 of the variety costata among those received. Probably pulchella may be found in all the 

 towns of the state where eastern plants are grown, but I am convinced that the species 

 is not native, and that the early records should be referred to one or the other of the next 

 two species. 



Vallonia cyclophorella Ancey. 



I have recently gone over all the Colorado Vallonias in the University cabinets, and 

 list herein the localities for each. It will be noticed that in a general way gracilicosta 

 is found living at the edge of the plains and in the lower foothills regions, while cyclo- 

 phorella extends into the mountains to considerable altitudes. The two species are 

 occasionally found mingled, though but seldom. We have cyclophorella from the follow- 

 ing localities: Florissant (Cockerell, S. A. Rohwer); Pike's Peak at 8,000 feet, and Lake 

 George (Cockerell); Bluebird Mine and Copeland Park, Boulder County (S. A. Rohwer); 

 Tolland and Sulphur Springs (Dodds); Morrison (F. Rohwer); near Axial, Buford, Rio 

 Blanco, Mud Spring and Marvine Lodge, all in Rio Blanco County, Owl Canyon, Box 

 Elder and Bellevue, all in Larimer County, Boulder, Eldora and Magnolia, in Boulder 

 County, Muddy Creek north of Kremmling and southwest corner of North Park 

 (Henderson). 



Vallonia gracilicosta Reinhardt. 



La Junta (Dodds); below Copeland Park, Boulder County (S. A. Rohwer); Morrison 

 (F. Rohwer); Floyd Hill (Hand); Boulder, Left Hand Creek and Lyons in Boulder 

 County, Box Elder and Owl Canyon in Larimer County, Meeker in Rio Blanco County 

 (Henderson). 



Genus VITREA Fitzinger 

 Vitrea cellaria Miiller. 

 Vitrea cellaria margaritacea Schmidt. 

 Vitrea lucida Drapamaud. 

 Vitrea alliaria Miller. 



These four Vitreas are recorded from Boulder greenhouse specimens (Cockerell, 



