8 BULLETIN 10 4, UNITED STATES NATIONAL MUSEUM 



Subfamily 1. Spiroplectammininae 



Test with the early chambers distinctly planispiral in both micro - 

 spheric and megalospheric forms; later chambers biserial; wall are- 

 naceous. 



Genus SPIROPLECTAMMINA Cushman, 1927 



Bull. 104, pt. 3, pp. 3-5 (Spiroplecta) . 



Subfamily 2. Textulariinae 



Test typically biserial or becoming uniserial, usually free ; chambers 

 simple or labyrinthic; wall arenaceous, usually perforate; aperture 

 simple or cribrate. 



Genus TEXTULARIA Defrance, 1824 



Bull. 104, pt. 3, pp. 5-22 (except T. harrettii, p. 20). 



Genus TEXTULARIELLA Cushman, 1927 



Bull. 104, pt. 3, p. 20 {Textularia harrettii Jones and Parker). 



Genus CUNEOLINA d'Orbigny, 1839 



Bull. 104, pt. 3, pp. 52-54. 



Genus BIGENERINA d'Orbigny, 1826 



Bull. 104, pt. 3, pp. 23-29 (except B. pennatula and B. capreolus = 

 Vulvulina) . 



Genus VULVULINA d'Orbigny, 1826 



Bull. 104, pt. 3, pp. 27, 28 {Bigenerina pennatula (Batsch) and B. 

 capreolus d'Orbigny). 



Family 10. VERNEUILINIDAE 



Test, at least in the early stages, triserial, later biserial in some 

 genera and in most specialized ones becoming uniserial; wall are- 

 naceous, the amount of cement varying in different genera and 

 species; aperture simple or multiple. 



Genus VERNEUILINA d'Orbigny, 1840 



Bull. 104, pt. 3, pp. 54-60 (except V. spinulosa = Reussia). 



Genus TRITAXIA Reuss, 1860 

 Bull. 104, pt. 3, pp. 66, 67 (?). 



Genus GAUDRYINA d'Orbigny, 1839 

 Bull. 104, pt. 3, pp. 67-78. 



Genus TRITAXILINA Cushman, 1911 

 Bull. 104, pt. 3, p. 79. 



