Plate 2 



Figures 1. Spirillina lalesepiata Terquem. X 75. Coast of Belgium. 



2 a, b. Spirillina limbata H. B. Brady. (After H. B. Brady.) a, side view; 

 b, jieripheral view. 

 3. Spirillina decorata H. B. Brady. (After H. B. Brady.) Off the 

 Canary Islands. 

 4, 5. Spirillina limbata H. B. Brady, var. denticulala H. B. Brady. Figs. 

 4 a-c, X 55. Off Plymouth, England, a, b, opposite syles; c, 

 peripheral view. Figs. 5 a, 6, X 90. Coast of Belgium, a, b, 

 opposite sides. 



6 o, b. Patellina corrugata Williamson. X 100. Off coast of Belgium. 



a, dorsal side; b, ventral side. 



7 a-c. Patellina corrugata Williamson. (After Williamson.) a, dorsal 



view; b, ventral view; c, peripheral view. 



8 a-c. Discorbis advena Cu^iman. X 55. Dry Tortugas, Fla. a, dorsal 



view; fe, ventral view; c, peripheral view. 



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