106 INVERTEBRATE PALEONTOLOGY. [WHITE. 



264. Pliysa Bridgerensis Meek. Henry's Fork, east of Fort Bridger, 

 Wyoming. 



265. Goniobasis tenera Hall sp. Various localities. (See Nos. 231, 

 247, and 259, and also general remarks on page 85.) 



- 266. Viviparus paludinceformis Hall sp. Various localities. (See Nos. 

 239, 248, and 260, and also general remarks on page 85.) 



267. Viviparus Wyomingensis Meek. Near Fort Bridger, and six miles 

 west of the Cameo Mountains, Wyoming. This seems to be specifically dis- 

 tinct from the prevailing form that I have referred to V. paludinceformis, 

 being a larger, thinner, and more inflated shell. 



BROWN'S PAKK GKOUP. 



268. Physa ?. This is the only invertebrate species discovered 



in the strata of this group, 'and all the examples of it are too imperfect to 

 serve as the basis of a specific description. 



TERTIARY FOSSILS FROM BEYOND THE LIMITS OF TIIE PLATEAU 



PROVINCE. 



269. Flustra f. Bijou Basin, forty miles east of Denver, Colo- 

 rado. The specimens are found incrusting the oyster, No. 270. 



270. Ostrea f. Bijou Basin, forty miles east of Denver, Colo- 

 rado. The species is a very large one ; the largest example is nearly a 

 foot in length and proportionally broad. 



271. Cyrena ( Veloritina) f. Fresh-water Tertiary deposits, Crow 



Creek, Colorado, where it was- found associated with No. 278. 



272. Corbicula Powetti White. Bijou Basin, forty miles east of Denver, 

 Colorado. Described on a following page. 



273. Venus f. Bijou Basin, forty miles east of Denver, Colo- 

 rado. The specimens are fragmentary, but the hinge is shown. 



274. Petricola f. Burrows only. Bijou Basin, Colorado. 



275. Mesodesma Bishopi White. Bijou Basin, forty miles east of Den- 

 ver, Colorado. Described on a following page. 



276. Dentalmm f. Bijou Basin, Colorado. A small longitudi- 

 nally striated species. 



