PLATE Q. 



Page. 



Fig. 1. Inoceramus oblongus 285 



a. Side view of left valve ; diameter reduced one-quaxter. 



b. Dorsal view of the same. 



Fm. 2. OSTKEA (AlECTRYONIA) SANlSriONIS 277 



a. Upper valve ; exterior view. 

 6. Lower valve ; interior view. 



c. Lower valve ; exterior view. 



d. Upper valve ; interior view. 



e. Exterior of the same. All natural size. 



