Plate 24 



Figures 1 a-c. Cibicides sp (?). X 50. East coast of United States, a, dor- 

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



2. Dyocibicides biserialis Cushman and Valentine. X 40. Off east 



coast of United States. 



3. Cibiciddla variabilis (d'Orbisny). (After d'Orbigny). Off the 



Canary Islands. 

 4 a-c. Webbiria rvgosa d'Orbigny. (After d'Orbigny). Off the Canary 

 Islands, a, dorsal view; b, ventral view; c, peripheral view. 

 5-8. Planorbulina mediterranensis d'Orbigny. Fig. 5, X 75. Off Bel- 

 gium. Figs. 6-8, Off Fowey, Fla. Fig. G, X 40. Fig. 7, 

 X 45. Fig. 8, Young stage. X 65. a, a, a, a, dorsal views; 

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



169 



