216 TERTIARY PERIOD. 



ARTICULATA. 



Class CRUSTACEA. 



Order OSTEACODA. 

 Family CYPEIDINIDJ]:. 



Genus OYPRIS Miiller, 1785. 

 Cypris ? 



At a locality west of Fairview and another at the • head of Soldier's 

 Fork, Utah, associated with some of the foregoing species, the minute shells 

 of a species of Cypris are very abundant. They are all compressed in shale 

 and too much injured to allow of a satisfactory specific determination, but 

 they are probably identical with Cypris Leidyi Evans and Shumard. The 

 type-specimens of that species were obtained from the "vicinity of Reno 

 Creek, a tributary of Teton or Little Missouri, about ninety miles from 

 Fort Pierre Chouteau." 



