EXPLANATION OF PLATE XXXIf. 



Keeneia platyschismoides, Eth. fil. 



Fig. 1. Whorls partly decorticated, seen from the back, showing the 

 peripheral band on the body-whorl only and bent stria of 

 the former. 



„ 2. Another specimen seen from the front, showing the mouth, band 

 on the body-whorl only, and the umbilicus filled with matrix. 



