102 INVERTEBRATE PALEONTOLOGY. [WHITE. 



202. Ezogyra ponderosa Roemer. Near Platte Canon, Middle Park, 

 Colorado. 



203. Inoceramus deformis Meek. Western Kansas. 



204. Inoceramus ( Volviceramus) exogyroides Meek. Three miles north- 

 eastward from Hot Springs, Middle Park, Colorado. 



205. Inoceramus BaraUni Morton ?. The specimens vary from the 

 typical forms in being deeper from hinge-line to base. 



206. Avicula Parkensis White. South of Grand River, Middle Park, 

 Colorado. Described on a following page. 



207. Heteroceras ?. Three miles northwestward from Hot 



Springs, Middle Park, Colorado. The species is represented by a fragment 



only. 



CENOZOIC AGE. 



TERTIARY PERIOD. 



BITTER CREEK GROUP. 



208. Ostrea Wyomingensis Meek. Point of Rocks, Black Buttes, and 

 Rock Spring, Wyoming. 



209. Ostrea arcuatllis Meek. Black Buttes, Wyoming. 



210. Anomia f. Black Buttes, Wyoming. 



211. Unio proplieticus White. Black Buttes, Wyoming. Described on 

 a following page. 



212. Unio petrinus White. Black Buttes, Wyoming. Described on a 

 following page. 



213. Unio f. Black Buttes, Wyoming. A large massive species, 



but much shorter than U. petrinus, with which it is associated. 



214. Unio f. Near Evanston, Wyoming. A large, elongate 



species, but the specimens are too imperfect for specific recognition or de- 

 scription. 



215. Unio Leanus Meek! South Fork of Vermilion River, near Dia- 

 mond Peak, Northwestern Colorado. 



216. Unio brachyopisthus White. Black Buttes, Wyoming. Described 

 on a following page. 



217. Corbicula (Leptesthes) fracta Meek. Black Buttes, Wyoming. 



