PLATE IV. 



Fig. 1. — CritMoninalem, Goiis. Sessile. Laid open to show the nulimontary septation 



Fig. 2. — „ „ Sessile specimen 



Figs. 3, 4. — Texhdaria conica, var. horrida, Egger. 



Fig. 5. — Crithionina rugosa, hispid variety. 



Figs. 6, 7. — Textularia porrecta, Brady 



Figs. 8, 9, 10. — Terneiiilina turris, sp.n. Side views 



Fig. n. — ,, ,, „ Apical \Hew 



Fig. 12. — „ „ „ Ba.sal view 



Fig. 13. — Gandryinafeniifjinea, sp.n. Balsam mount 



Figs. 14, 15.- „ 



Figs. 16, 17. — Gaudryina rugosa, d'Orbigny. Long type 



Figs. 18, 19. — Bttliwiiia chapnumi, sp.n. Side views. 



Fig. 20.— „ „ „ Oral view 



Figs. 21, 22. — Bolivina punctata, var. arenacea, nov. 



Figs. 23, 24, 25. — Bifarina porrecta, var. arenacea, nov 



Fig. 26. — ,, .. ,. ,, Balsam mount 



Figs. 27, 28. — Bolivina rariahilis, var. arenacea, nov. 



Figs. 29, 30. — Bolivina textilarioides, var. arenacea, nov 



Figs. 31, 32. — Bolivina inHata, var. arenacea, nov. . 



Fig. 33. — ,, ,, ,, ,, Balsam mount 



Figs. 34, 35. — Bolivina tortuosa, var. arenacea, uov. . 



Figs. 36, 37, .38. — Cassithdina sidxflobosa, var. titherridala, nov 



