Plate 13 



Figures 1, 2. Rotalia beccarii (Linnaeus). Fig. 1, X 50, Off east coast of 

 United States. Fig. 2, X 75. Off coast of Belgium, a, a, 

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



3 n-c. Rotalia beccarii (Linnaeus), var. tepida Cushman. X 100. San 



Juan Harbor, P. R. a, dorsal view; b, ventral view; c, periph- 

 eral view. 



4 a-c. Rotalia (?) perlucida Heron-Allen and Earland. X 60. (After 



Heron-Allen and Earland.) Off British Isles, a, dorsal view; 

 6, ventral view; c, peripheral view. 



5 a-c. Rotalia rosea d'Orbigny. X, 55. Off Cul)a. a, dorsal view; 



b, ventral view; c, peripheral view. 



6 a-c. Epistomina elegans (d'Orbigny). X 50. Off Fowey, Fla. a, 



dorsal view; b, ventral view; c, ])eripheral view. 



158 



