320 FORAMINIFERA 



Pulvinulina (part) of authors. 



Pellatispira Cushman, 1927 (not BoussAc). 



Carinina Galloway and Wissler, 1927 (not Rubrecht). 



Test typically plano-convex, the dorsal side flattened, ventral 

 side convex, in the early stages especially of the microspheric 

 form trochoid, the aperture on the periphery or even on the 

 ventral side as in Cibicides, later on the margin on the dorsal 

 side, a low^, elongate opening at the base of the chamber, a wide 

 flange of clear material separating the later coils and forming 

 a carina about the periphery. 



Eocene to Recent. 



EXPLANATION OF PLATE 52' 



Planorbulinidae, Rupertiidae, Homotremidae 

 Fig. 



1-4. Linderina brur/esi Schlumberger. (After type figures). Fig. 1, 

 Exterior. X 28. Fig. 2, Vertical section. X 25. Fig. 3, De- 

 tails of vertical section. X 65. Fig. 4, Portion of horizontal 

 section, x 65. 

 5. Gypsina vesicidaris (Parker and Jones). X 20. (After H. B. 

 Brady). 

 6-9. Acervulina inhaerc7is Schultze. Fig. 6 (After type figure). X 

 50. Figs. 7- 9 (After H. B. Brady). X 25. 

 10-13. Rupertia stabilis Wallich. X 28. (After H. B. Brady). Fig. 10, 

 Young stage. Fig. 11, Adult. Fig. 12, Longitudinal section. 

 Fig. 13, Transverse section. 



14. Carpe7iteria monticidaris Carter. X 8. (After H. B. Brady). 



Young specimen. 



15. Carpenteria utricularis Carter. X 10. (After H. B. Brady). 



Young specimen. 



16. Carpenteria monticidaris Carter. X 20. (After H. B. Brady). 



a, peripheral view; b, ventral view. 



17. Carpenteria proteiformis Goes. X 10. 



18-20. Eorupertia boninensis (Yabe and Hanzawa). (After type fig- 

 ures). Fig. 18, Exterior. X 8. Fig. 19, Longitudinal section. 

 X 12. Fig. 20, Transverse section. X 12. 



21-24. Polytrema miniacenm (Pallas). Fig. 21 (After Hickson). X 3. 

 Fig. 22 (After Heron-Allen and Earland). Ventral. view, show- 

 ing very young coiled stage. Figs. 23, 24 (After Hickson). Fig. 

 23, Surface view. X 35. Fig. 24, Section. X 65. 



25-27. Homotrema rubrum (Lamarck). (After Hickson). Fig. 25, Ex- 

 terior. X 3. Fig. 26, Surface. X 35. Fig. 27, Section. X 65. 



28-30. Sporadotrema cylindricmn (Carter). (After Hickson). Fig. 28, 

 Exterior. X iy2. Fig. 29, Surface. X 35. Fig. 30, Section. 

 X 65. 



