EXPLANATION OF FIGURES ON PLATE XVI. 
1b°. Strophia dallii, right hand figure, front view of type ; left, 
right view of same. 
2b. Strophia maritima, front view ; 2a, right side of same. 
1a. Strophia uva, right side ; 1b, front of same; lc, another form 
of same species. 
3a. Strophia mumia, front ; 3b, right side of same. 
4a. Strophia brownei, front view of type; 4b, right side of same. 
da. Strophia viola, front view of type ; 5b, right side of same. 
6a. Strophia orbicularia, front view ; 6b, right side of same. 
7a. Strophia glans, right side; 7b, front of same. 
