244 COLUMELLA. 



Length 2.8, diam. 1.3 mm.; 7 whorls. Howardsville, Colo. 

 Fig. 7. 



Length 2.5, diam. 1.3 mm.; 6y 3 whorls. Banff, Alberta. 

 Fig. 8. 



New Mexico: Willow creek, Mogollon Mts. (Ferriss & 

 Daniels) ; La Belle (Ashmun). Arizona: Millers Park, Hua- 

 chuca Mts. (Ferriss). Colorado: Cunningham Gulch (type 

 loc.) and Eio La Plata, 8-9000 ft.; Howardville (IngersoU) ; 

 Estes Park (Ashmun) ; near Colorado Springs (H. B. Baker) ; 

 ToUand, Gilpin Co., 8900-9000 ft. (CockereU) ; Florissant, 

 Magnolia and Eldora (J. Henderson) ; Floyd Hill (Hand) ; 

 near Ohio City (F. Rohwer) ; Long's Peak Inn (Spangler). 

 Utah: Chalk Creek, 7500-8000 ft. (R. V. Chamberlain). Wy- 

 oming: Mammoth Hot Spring, Nat. Park (Elliott). Alberta: 

 Banff (S. Brown) ; Kananaskis (J. Macoun). British Colum- 

 bia: Field (S. Brown) ; Tobacco Plains, Kootenay River valley 

 (J. B. Tyrrell). Pleistocene, Kansas: Long Island, Phillips 

 Co. (Hanna). 



Pupilla alticola Ingersoll, Bull. U. S. Geol. and Geogr. 

 Survey of the Territories, I, 2d ser., no. 1, 1875, p. 128 ; 8th 

 Ann. Rep. Hayden Survey, 1876, p. 391, text-fig. — Pupa alti- 

 cola W. G. Binney, Terr. Moll., V, p. 212, f . 116 ; Man. Amer. 

 Land Shells, 1885, p. 174, f. 166. — Ckll., Journ. of Conch., 

 VI, p. 62. — Sphyradium alticola Hanna, Proc. U. S. Nat. 

 Mus., vol. 41, 1911, p. 373, text-fig. 2. — J. Henderson, Univ. 

 of Colo. Studies, IX, 1912, p. 61. — Columella alticola (Ing.), 

 Berry, Canada Dept. of Mines, BuU. 36, 1922, p. 14. 



Sphyradium edentulum J. Henderson, in part, Univ. of 

 Colo. Studies, IV, p. 177.— Whiteaves, Ottawa Nat., 1905, p. 

 171. — S. edentulum var. alticola Cockerell, Nautilus, XXV, 

 p. 58 (Tolland). 



This species is more cylindrie than C. edentula, the summit 

 rounded, and when fully developed the last whorl is more 

 swollen than those preceding. It reaches a larger size, and 

 has more whorls. It is cinnamon-brown, like C. edentula, 

 sometimes with some whitish streaks. The surface is finely 

 striate, decidedly more so than in typical edentula, but not 

 more than in the striate form of that species. All of the 

 whorls are rather strongly convex. Young or small individ- 



