56 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 80> 



Figures 8, a, &. Spiroplectmtimina anceps (Reuss) var., X 40. a. Front view; b. 

 apertural view. 

 9,10. Spiroplectamminu excolata (Cushman). Figure 9, X 60; front view 

 of partially developed specimen. Figure 10, X 40; very highly 

 developed specimen, a, Front view ; 6, apertural view. 



Plate 4 



Figures 1,2. Textularia concmna Reuss. Figure 1, X 40. Figures 2 a, J>, 

 X 30. a. Front view; &, apertural view. 

 3a, 6. Verneuilma polystropha (Reuss), X 60. a, Front view; &, aper- 

 tural view. 

 4 a, 6. Tritaxia pyramidata Reuss, X 25. a, Front view ; ft, apertural 

 view. 

 5. Gaudryina filiformis Bertlielin, X 80. 

 6 a, 6. Gaudryina rugosa d'Orbigny, X 30. a, Front view ; 6, apertural 



view. 

 7-10. Gmulru'ma retusa Cushman, X 40. Figure 8 a, Front view; &, 

 apertural view. Figure 10, early Verneuiline stage. 

 11. Gaudryina indentata Cushman and Jarvis, X 35. Holotype. 



Plate 5 



Figures 1, 2. Gaudryina- oxycona Reuss. Figure 1, X 40. Figure 2, X 35. 

 a, a. Front views ; ft, &, apertural views. 



3. Gaudryina laevigata Franke var. pyramidata Cushman, X 35. 



4. Clavulina uspera Cushman, X 30. 



5. Clavulina trilatera Cushman, X 30. 



G-8. Clavulina aspera Cushman, whitei, new variety, X 30. Figure 6, 

 holotype ; a, side view ; &, apertural view. Figures 7, 8, micro- 

 spheric specimens with angular later portions ; a, a, side views ; 

 6, &, apertural views. 

 9-11. Clavulina chitinosa, new species, X 40. Figure 9, holotype. All 

 specimens somewhat distorted by pressure. 



Plate 6 



Figures 1 a, h. Rzehakina epigona (Rzehak) var. lata Cushman and Jarvis, 

 X 30. a, Side view ; h, apertural view. 

 2-5. Trochammina glohigerlniformis (Parker and Jones), X 30. 

 Figure 2 a, dorsal view ; V, side view. Figure 3, side view. 

 Figure 4, ventral view of a much distorted and compressed 

 specimen. Figure 5, dorsal view. 



6 Or-c. Trochaimnina trinitatensis Cushman and Jarvis, X 40. 



0, Dorsal view ; h, ventral view ; e, peripheral view. 



7 a, b. Robulus williamsoni (Reuss), X 40. a, Side view; 6, apertural 



view, 

 8, 9. Rohulus oligostegia (Ruess), X 40. Figure 9 a, side view; 

 6, apertural view. 

 10 a, 6. Roinlus trinitatensis, new species, X 55. a, Side view ; 



b, apertural view. • 

 11 0, b. Robulus stemalis (Berthelin), X 40. a, Side view; b, aper- 

 tural view. 



