EXPLANATION OF PLATES 

 Plate 1 



Fig. 1. Ehrenbergina semmesi, new species. I"ront view. X 60, 



2 a-c. Ehrenbergina serrata Reuss. a, ventral view; b, side view;c, dorsal 

 view. After Reuss, type figure. 



3, i. Ehrenbergina foveolata Schubert. 3, ventral view(?); 4, dorsal view (?) 

 After type figures of Schubert. X 50. 



5a, b. Ehrenbergina bicornis H. B. Brad}\ a, ventral view; I), dorsal view. 

 After Brady's type figures, X 50. 



6 0, b. Ehrenbergina hystrix H. B. Brady, a, ventral view ; h, dorsal view, 

 X 60. After Brady's type figures. 



7, ^J" Ehrenbergina hystrix H. B. Brady, var. glabra Heron-Allen and Ear- 

 land. 5, ventral view; 6, apertural view. X 60. After originals. 



9. Ehrenbergina rni'.^tayeri Cushrnan. Ventral vievr, X 60. 



Plate 2 



Figs.^la-c. Ehrenbergina bradyi Cushman. a, ventral view; b, dorsal view; c, aper- 

 tural view. X 60. After Brady. 



2a-c. Ehrenbergina pacifica Cushman, new species, a, ventral view; b, dorsal 

 view; c, apertural view. X 60. After Brady. 



3. Ehrenbergina trigona Goes. Ventral view. X80. Young specimen. 



4a, b. Ehrenbergina trigona Goes, var. braziliensis Cushman. a, ventral 

 view; b, dorsal view. X 80. 



ba-c. Ehrenbergina pupa (d'Orbigny). a, ventral view; b, peripheral view; 

 c, dorsal view. X 80. After Brady. 



6a-c. Ehrenbergina pupa (d'Orbigny). a, dorsal view; b, peripheral view; 

 c, ventral view. X 75. After d'Orbigny's type figure. 



8 



