274 FORAMINIFERA 



designation, Rotalia (Turbinulina) beccarii {hiNNE) —Nautilus heccarii 



Linne). 

 Rosalina (part) of authors. 

 Truncatulina (part) of authors. 



Test trochoid, usually biconvex, the umbilical area closed, 

 usually having a conical plug of clear shell material ; sutures on 

 the ventral side usually deeply depressed and often ornamented 

 along the sides, dorsal side usually limbate; wall calcareous, 

 perforate, often double; aperture, an arched opening at the 

 border of the ventral face midway between the periphery and 

 the umbilical area, interseptal canals sometimes present. 



Cretaceous to Recent. 



Subfamily 5. Siphonininae 



Test trochoid, at least in the early stages, umbilical area filled, 

 supplementary apertures near the periphery and just below it 

 on the ventral side, sometimes with a neck and lip. 



EXPLANATION OF PLATE 40 



rotaliidae 

 Fig. 



1. Eponides rejmndus (Fichtel and Moll). X 20. (After H. B. 



Brady). 



2. Eponides tenera (H. B. Brady). X 50.- (After type fig-ure). 



3, 4. Rotalia ti-ochidiformis Lamarck. X 20. Fig. 3, Young specimen. 

 a, ventral view; h, side view. Fig. 4, Older specimen, ventral 

 view. 



5. Rotalia beccarii (Linne), var. x 35. (After H. B. Brady). 



6. Epistomina elegans (d'Orbigny). X 25. (After H. B. Brady). 



7. Siphonina tubulosa. Cushman. X 50. 



8. Siphonina howei Cushman. X 65. (After type figure). 



9. Siphoninclla claibornevsis Cushman and Howe. X 65. (After 



type figure). 

 10. Siphoninella soluta (H. B. Brady). X 65. (After type figure). 

 11-13. Siphoninoides echinata (H. B. Brady). X 65. (After type fig- 

 ures). 



14. Cancris auriculus (Fichtel and Moll). X 30. (After H. B. Brady). 



15. Baggina californica Cushman. X 40. (After type figure). (In 



all figures where not mentioned: a, dorsal view; b, ventral view; 

 c, peripheral view). 



