FORAMIlSriFERA OF THE ATLANTIC OCEAN 9 



Genus CLAVULINA d'Orbigny, 1826 



Bull. 104, pt. 3, pp. 80-89. 



Family 11. VALVULINIDAE 



Test in the early stages triserial, later with a secondary spiral 

 development, finally in some genera becoming annular; chambers 

 simple or in the higher forms labyrinthic; aperture simple or cribiatc. 



Genus VALVULINA d'Orbigny, 1826 



Bull. 104, pt. 3, pp. 61-64. 



Family 12. FUSULINIDAE 

 (Fossil — Palaeozoic.) 



Family 13. LOFTUSIIDAE 

 (Fossil — Eocene.) 



Family 14. NEUSINIDAE 



Genus BOTELLINA W. B. Carpenter, 1869 



Bull. 104, pt. 2, p. 88. 



Family 15. SILICINIDAE 



(Fossil — Jurassic to Eocene.) 



Family 16. MILIOLIDAE.— Family 17. OPHTHALMIDIIDAE.- 

 Family 18. FISCHERINIDAE. (In this part— Part 6.) 



Family 19. TROCHAMMINIDAE 



Test in general trochoid, of numerous chambers, or irregular; wall 

 arenaceous, with much cement, usually of yellowish or reddish brown 

 color. 



Subfamily 1. Trochammininae 



Test trochoid, chambers in spiral whorls; aperture ventral. 

 Genus TROCHAMMINA Parker and Jones, 1860 



Bull. 104, pt. 2, pp. 72-83. 



Subfamily 2. Globotextulariinae 



Test irregularly spiral, the chambers globose; aperture in the open 

 umbilical area. 



Genus GLOBOTEXTULARIA Eimer and Fickert, 1899 



Bull. 104, pt. 2, pp. 83, 84. 

 31569—29 2 



