300 FORAMINIFERA 



Subfamily 5. Sphaeroidininae 



Test in the earliest stages generally planispiral, later cham- 

 bers irregularly involute; aperture in the early stages, a crescent- 

 shaped slit, in the adult, rounded, with a flat, rounded, tooth-like 

 projection. 



Genus SPHAEROIDINA d'Orbigny, 1826 

 Plate 45, figure 17; plate 46, figure 14 

 Genoholotype, Sphaeroidina hulloides d'Orbigny 

 Sphaeroidbia d'Orbigny, Ann, Sci. Nat., vol. 7, 1826, p. 267. 

 Sexlocidina Czjzek, Haidinger's Nat. Abhandl., vol. 2, 1848, p. 149 



(genoholotype, Sexlocnliva hmteri Czjzek). 

 Bolbodium Ehrenberg, Monatsber. k. preuss. Akad. Wiss. Berlin, 1872, 

 p. 281 (genoholotype, Bolbodium sphaernla Ehrenberg). 



EXPLANATION OF PLATE 46 



Cassidulinidae, Chilostomellidae 



Fig. 



1. Ceratobulimina pacifica Cushman and Harris. (After H. B. Brady). 



a, dorsal view; b, ventral view; c, edge view. 



2. Pulvmulinella snbpernviana Cushman. a, dorsal .view; b, ventral 



view; c, edge view. 



3. Cassidulina californica Cushman and Hughes, a, dorsal view; b, 



ventral view; c, edge view. 



4. Cassidulinoides purkeyiana (H. B. Brady). (After H. B. Brady), a, 



dorsal view; b, ventral view; c, end view, 



5. Orthoplecta clavaia H. B. Brady. (After H. B. Brady). 



6. Ehrenbcrgina pacifica Cushman. (After H. B. Brady), a, dorsal 



view; b, ventral view; c, end view. 



7. Allomorphina trigona Reuss. (After H. B. Brady), a, dorsal view; 



b, ventral view. 



8. Chilostomella ooliva Schwager. (After H. B. Brady), a, dorsal view; 



'b, ventral view. 



9. Chilostomelloides oviformis (Sherborn and Chapman). a, dorsal 



view; b, ventral view; c, side view; d, end view, 



10. Seabrookia pellucida H. B. Brady. (After H. B. Brady), a, dorsal 



view; b, end view. 



11. AUomorphinclla contraria (Reuss). (After Reuss). «, side view; 



b, edge view. 



12. Chilostomellina fimbriata Cushman. a, dorsal view; b, ventral view; 



c, end view. 



13. Pullenia sphaeroides d'Orbigny. a, side view; b, apertural view. 



14. Sphaeroidina bulloides d'Orbigny. a, dorsal view; b, ventral view. 



