FORAMINIFERA OF THE ATLANTIC OC'K\N', 



153 



extended, somewhat truncate ; chambers few ; sutures distinct but not 

 depressed ; wall smooth ; aperture large, radiate. 



Length up to 0.75 mm. 



Distribution. — I have had the species or what seems to 1)e it from 

 several stations off the northeastern coast of the United States. It is 

 also recorded from various other parts of the world, and especially 

 from the coasts of the British Isles. 



Fistulose forms have occurred at two of the stations. 



Poliimorphina sororia — material examined. 



POLYMORPHINA SORORIA Reuss, var. CUSPIDATA H. B. Brady. 



Plate 41, fig. 2. 



Pohjmorphina sororia Reuss, var. ciispidata H. B. Brady. Rep. Voy. 

 Challenger, Zoology, vol. 9, 1884, p. 563, pi. 71, figs. 17-19 ; pi. 72, fig. 4. 



Description. — Variety differing from the typical in the develop- 

 ment of a long acicular spine at the base of the test, 



Distrihution. — I have a single specimen from the Caribbean which 

 is very close to one of the specimens figured by Brady. His records 

 for the species include two from the North Atlantic, west of Ireland 

 in 808 and 1,443 fathoms (1,477 and 2,639 meters). 



Polymorphina sororia, var. cuspidata — material examined. 



POLYMORPHINA COMPLANATA D'Orbigny. 



Polymorphina complanafa D'Orbigny, Foram. Foss. Vienne, 1846, p. 234, 

 pi. 13, figs. 25-30. — H. B. Brady, Parker, and Jones, Trans. Linn. 

 Sec. London, vol. 27, 1870, p. 230, pi. 40, figs. 14a, b; also text 

 figures. — Balkwill and Millett, Journ. Mlcr., vol. 3, 1884, p. 84, 

 pi. 4, fig. 9. — H. B. Bbady, Journ. Roy. Micr. See, 1887, p. 914. — Balk- 

 will and Millett, Rec. Foram. Galway, 1908, p. 6, pi. 4, fig. 9. — Heron- 

 Allen and Eakland, Journ. Roy. Micr. Soc, 1909, p. 432, pi. 17, 

 figs. 3-5. 



