286 FORAMINIFERA 



Test conical, the early chambers trochoid, later ones in annular 

 series separated somewhat from one another along the periphery, 

 with depressions between radiating from the central umbilical 

 area, the next series of chambers placed in these depressions 

 and filling them; wall calcareous, coarsely perforate; aperture 

 in the adult consisting of fine rounded pores along the ventral 

 sides of the chamber. 



Cretaceous ( ?) to Recent. 



EXPLANATION OF PLATE 43 



Cymbalopouettidae, Cassidulinidae 

 Fig. 



1. Cymbalojxyyetia aqimmynoiut (d'Orbigny) . X 35. (After H. B. 



Brady). 



2-4. Cymhaloporella falxllacforniis (IL B. Brady). X 28. (After type 



figures). Fif^-. 2, Dorsal view. Fig. 3, Peripheral view. Fig. 



4, Ventral view. 



5, 6. Halkyardia vivtdvm (Licbus). X 25. (After Halkyard). Fig. 



6, Section. 

 7-10. Tretomphalus bulloides (d'Orbigny). Figs. 7-9, (After H. B. 

 Brady). X 40. Fig. 7, Dorsal view. Fig. 8, Ventral view. 

 Fig. 9, Peripheral view. Fig. 10, (After Earland), showing 

 inner "float" chamber. X 40. 

 11. CeratobuUmina pacifica Cushman and Harris. X 40. (After 

 H. B. Brady). 

 12, lo. Fulvinidinella jiacificu Cushman. X 35. (After type figures). 



Fig. 12, Dorsal view. Fig. 13, Peripheral view. 

 14-16. Ca.^-siduliria laevigata d'Orbigny. Figs. 14, 15 (After type figures). 

 Fig. 14, Side view. Fig. 15, Peripheral view. Fig. 16 (After 

 H. B. Brady). X 50. 

 17-19. Cassidnlinoides parkeriaiia (II. B. Brady). X 50. (After type 

 figures). 

 20. Orthoplecta clavata H. B. Brady. X 65. (After type figure). 

 21-23. Ehrenherijina hradyi Cushman. (After type figures). Fig. 21, 

 Ventral view. X 40. Fig. 22, Dorsal view. X 40. Fig. 23, 

 Apertural view. X 50. 

 (In all figures: a, dorsal view; b, ventral view; c, peripheral 

 view). 



