172 UNIVERSITY OF COLORADO STUDIES 



Vertigo ventricosa elatior Sterki. 



One specimen was collected this year at Lake George by Professor Cockerell and 

 identified by Mr. Vanatta. 



Vertigo gouldi Binn. Fig. 10. 



Colorado, Sterki 54, 31; Binney 7, 199. Fossil 

 at West Cliff, Cockerell 29, 143. 



Vertigo tridentata Wolf. 



South Park (No. 29667 U. S. Nat'l Mus.), Sterki 

 Fig. 10.— Vertigo gouldi. Mss., 55, 135; Binney 7, 196. 



Vertigo modesta corpulenta Morse. 



Colorado, Dall 34, 367. 



Pupa corpulenta. Los Pinos Agency and divide S. W. of Los Pinos, IngersoU 35, 

 392. Custer and Delta Counties, Cockerell 22, 62, 65. North Park, Pilsbry & Johnson 

 43,21. 



One specimen was collected recently by Prof. Cockerell at Lake George and iden- 

 tified by Mr. Vanatta. 



Vertigo modesta corpulenta parietalis Ancey. 



Colorado, Pilsbry & Vanatta 44, 609. Delta and Custer Counties (Cockerell), 

 North Park (E. A. Barber), Vanatta Mss. 



Pupa corpulenta parietalis. Black Lake Creek, Cockerell Mss. 



Dall includes ingersolli Ancey {=^concinnula Ckll.) and coloradensis Ckll. under 

 the name decora Gld. {=mode5ta Say) for Colorado, Dall 34, 367; see Cockerell's com- 

 ments, 28, 135. 



It would be no great sin to consider the last two sjTionyms of modesta. 



Vertigo coloradensis Ckll. 



Near Swift Creek. Pilsbry & Vanatta 44, 603, 609; Cockerell 28, 135; Sterki 57, 5. 

 Pupa coloradensis. Colorado, Cockerell 22, 63; Brit. Nat., 1891, p. 100; Binney 7, 

 191; Pilsbry & Johnson 43, 21. 



Vertigo concinnula Ckll. 



Animas Valley, Rio LaPlata and Cunningham Gulch, Cockerell 28, 135. Custer 

 and Summit Counties, Pilsbry & Vanatta 44, 600. Summit and Custer Counties and 

 Black Lake Creek (Cockerell), Vanatta Mss. 



Vertigo californica Ing. Blue River Valley, Los Pinos Agency, S. W. of Los Pinos, 

 Howardsville, Animas Valley and Rio LaPlata, IngersoU 35, 392. 

 Vertigo decora var. concinnula Ckll. Colorado, Dall 34, 367. 



Pupa concinnula Ckll. "Colorado at high elevations. {V. ingersolli Ancey, unpub- 

 lished, with varieties haydeni and accedens Anc, belong here.)" Pilsbry & Johnson 

 43, 21. See Sterki 57, 5. 



Var. haydeni Ancey. Cunningham Gulch, distinguished by three 

 parallel teeth on inside of outer wall of aperture, Cockerell Mss. 

 We recently collected four specimens at Eldora. 



Fig. II.— Vertigo Vertigo milium Gdl. Fig. 11. 



milium. 



Kremmling, Cockerell Mss. 



