214 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 53 



MOUNT WHYTE FORMATION (continued): 



2 (continued) : p^^t 



Fauna : 

 Hyolithes. 

 Agraulos. 



On Mount Stephen, at this horizon, there were found: 

 Microdiscus, sp. undt. 

 Olcnellns, sp. undt. (fragments). 

 Ptychoparia, sp. undt. 

 Protypiis, sp. undt. 



3. Siliceous shale with a few interbedded thin layers of compact, 



hard, gray sandstone 115 



In the Lake Agnes section 5 miles southeast of Mount Bos- 

 worth, the fauna of about this horizon includes : 

 Micromitra (Paterina) zvapta Walcott [1908^, p. 59]. 

 Obolus parvus Walcott [iQoSrf, p. 61]. 

 Hyolithes billingsi Walcott [1886, p. 134]. 

 Olenopsis agnes, new species. 

 Ptychoparia, 3 species. 

 AlbertcUa, sp. undt. 

 Bathyuriscus. 



On the south slope of Mount Bosworth two drift blocks of 

 siliceous shale, supposed to be from this horizon, were found, 

 from which the following species were collected : 



Micromitra (Paterina) wapta Walcott [igoSd, p. 59]. 



Obolus parvus Walcott [igoSd, p. 61]. 



Acrothclc colleni, new species. 



Wimanclla simplex Walcott [1908c?, p. loi]. 

 . Agraulos, sp. 



Ptychoparia, sp. 



Bornemannia, sp. 



Albertella bosworthi Walcott [1908&, p. 22]. 



Albertella Helena Walcott [1908&, p. 19]. 



Vanuxcmella contracta, new genus and new species. 



Bathyuriscus, sp. a. 



On Mount Stephen, at about the same horizon, the following 

 were found : 

 Hyolithes billingsi Walcott [1886, p. 134]. 

 Scenella varians Walcott [1886, p. 127]. 

 Olenopsis agnes, new species. 

 Bornemannia prima, new genus and new species. 



4. Interbedded layers of gray fossiliferous limestone and greenish 



gray siliceous shale 20 



Fauna : 

 Nisusia festinata (Billings) [1861, p. 10]. 

 Scenella varians Walcott [1886, p. 127]. 

 UvoJithcUus. 



