CATALOGUE OF FOSSILS. 105 



tion, Wyoming-. Described on a following page. It occurs also in the 

 Lower Green River Group. (See No. 242.) 



250. Unio ?. Henry's Fork, Wyoming. 



251. SptwBrium ?. Alkali stage-station, twenty-one miles north- 

 ward from Green River Station, Wyoming. 



252. Planorbis spectabilis Meek. Henry's Fork, Wyoming. Occurs 

 also in the Bridger Group. (See No. 263, and also general remarks on 

 page 85.) 



253. Planorbis 1. Henry's Fork, Wyoming. A small species, 



marked with fine revolving lines. 



254. Pliysa ?. Henry's Fork, Wyoming. 



255. Succinea papillispira White. Alkali stage-station, Wyoming. De- 

 scribed on a following page. 



256. Helix f. Henry's Fork, Wyoming. A small species, 



somewhat resembling the recent H. perspective 



257. Piqm incolata White. Henry's Fork, Wyoming. Described on a 

 following page. 



258. Pupa arenula White. Henry's Fork, Wyoming. Described on a 

 following page. 



259. Goniobas-is tenem Hall sp.- Various localities. (See Nos. 231, 247, 

 and 265, and also general remarks on page 85.) 



260. Viviparus paludinaformis Hall sp. Henry's Fork and Alkali stage- 

 station, Wyoming, and various other localities. At the first-named locality 

 the specimens are below the usual average size. (See Nos. 239, 248, and 

 266, and also general remarks on page 85.) 



261. Cypris f. Henry's Fork, Wyoming. This species seems 



to be specifically different from C. Leidyi Evans and Shumard. 



BRIDGES GROUP. 



262. Unio Haydeni Meek. Near Fort Bridger, Wyoming. 



263. Planorbis spectabilis Meek. Henry's Fork, east of Fort Bridger, 

 and six miles west of Badland Mountains, Wyoming. Occurs also in the 

 Upper Green River Group. (See No. 252, and also general remarks on 

 page 85.) 



