100 INVERTEBRATE PALEONTOLOGY. [WHITE. 



J68. Unio gonionotus White. Sevier Cliffs, twelve miles above Pan- 

 guitch, Utah. Described 011 a following page. 



169. Unio f. Associated with the last (168), but differs from 



it in its more convex beaks and in wanting the plications of that species. 



170. Unio l)elliplicatus Meek. Bear River Valley, near Mellis Station, 

 Wyoming. 



171. Unio Vetustus Meek. Bear River Valley, near Mellis Station, 

 Wyoming, and Canon of Desolation, Utah. 



172. Cyrena (Veloritina) Durkeei Meek. Bear River Valley, near 

 Mellis Station, Wyoming. 



173. Cyrena (Veloritina) f. Upper Kanab, Utah. 



174. Cyrena (Veloritina) cytlieriformis Meek and Hayden. Two miles 

 west of Point of Rocks, Wyoming. 



175. Corbula undlfera Meek. Rock Spring, Wyoming. 



176. Corbula pyriformis Meek. Bear River Valley, near Mellis Station, 

 Wyoming. 



177. Corbula tropidopliora Meek. Two miles west of Point of Rocks, 

 Wyoming. 



178. Limncea ?. Upper Kanab, Utah. 



179. Limnaa f. Bear River Valley, near Mellis Station, Wyo- 

 ming. 



180. Planorbis (Batliyompliahis) Kanabcnsis White. Upper Kanab, 

 Utah. Described on a following page. 



181.. Pliysa Kanabensis White. Upper Kanab, Utah. Described on a 

 following page. 



] 82. Pliysa ?. Bear River Valley, near Mellis Station, Wyo- 

 ming. 



183. Pliysa ?. Upper Kanab, Utah. Associated with No. 181, 



but it is a larger species, and has a much shorter spire, the volutions of 

 which are more broadly shouldered on the proximal side of the suture. 



184. Rliytopliorus prisons Meek. Bear River Valley, near Mellis Sta- 

 tion, Wyoming. 



185. Rliytopliorus Meekii White. Bear River Valley, near Mellis Sta- 

 tion, Wyoming. Described on a following page. 



