42 BULLETIN 71, UNITED STATES NATIONAL MUSEUM. 



Plate 5. 



Globigerina sacculifera. X 75. la, from above; lb, same from below. 



Plate 6. 



Orbulina universa. X 50. (After Brady.) 



Fig. 1. Specimen with spines; 



2-4. Specimens viewed by transmitted light showing Globigerina-Uke young 



within. 

 5. Thick-walled specimen showing various layers of wall. 



Plate 7. 

 Orbulina universa. 



Fig. 1. Broken specimen showing early Globigerina-]ike chambers. X 75. 



2. Slightly irregular specimen showing large aperture and smaller pores, pre- 

 viously formed chamber still visible from the exterior. X 90. 



Plate 8. 

 Hastigerina pelagica (after Brady). 



Fig. 1. Living specimen. X 30. 



2. Specimen showing spines complete and sarcode. X 33. 



3, 4. Specimens from glycerine mounts. X 38. 



5-8. Dead and empty tests with broken spines. X 38. 



Plate 9. 



Living specimen of Globigerina bulloides with spines (after Brady). 



Plate 10. 



Fig. 1. Globigerina conglobata, in section. X 50. (After Brady.) 



2. Sphseroidina dehiscens, in section. X 50. (After Brady.) 



3. Pullenia obliquiloculata, in section. X 50. (After Brady.) 



4. Globigerina sacculifera, in section. X 50. (After Brady.) 



5. Globigerina sequilateralis, in section. X 50. (After Brady.) 



6. Globigerina conglobata, in section. X 50. (After Brady.) 



7. Sphseroidina bulloides, in section. X 50. (After Brady.) 



Plate 11. 



Fig. 1. Candeina nitida. X 75. a, from side; b, from above; <*, from below. 



2. Pullenia sphseroides. X 75. a, from side; b, apertural view. 



3. Orbulina universa. X 180. Portion of surface. 



Plate 12. 



Fig. 1. Sphseroidina bulloides. X 66. a, apertural view; b, from above. 



2. Pullenia obliquiloculata. X 66. a, from above; b, apertural view. 



3. Pullenia obliquiloculata. X 66. a, from above; b, apertural view. 



Plate 13. 



Fig. 1. Sphseroidina dehiscens. X 55. a, from below; b, from above; c, from side. 

 2. Pullenia quinqueloba. X 66. a. apertural view; b, side view. 



