EXPLANATION OF PLATE 10 

 Figures approximately of natural size 



Fig. 1. Dosinia jacalitosana Arnold. Exterior of right valve; from locality 

 3012, Priest Valley, Monterey County; lower Etehegoin. 



Fig. la. Dosinia jacalitosana Arnold. View of hinge of right valve; from 

 locality 3012. 



[250] 



