40 BULLETIN 104, UNITED STATES NATIONAL MUSEUM, 



Sphaeroidina dehiscens — material examined — Continued. 



Genus PULLENIA Parker and Jones, 1862. 



Nonionina (part) D'Orbigny, Ann. Sci. Nat., vol. 7, 1826, p. 293. 



Pullenia Parker and Jones (type, P. sphaeroides (D'Orbigny)), in Car- 

 penter, Parker, and Jones, Introd. Foram., 1862, p. 184. — H. B. Brady, 

 Rep. Voy. Challenger, Zoology, vol. 9, 1884, p. 614. — Chapman, The 

 Foraminifera, 1902, p. 207.— Cushman, Bull. 71, U. S. Nat. Mus., pt. 4, 

 1914, p. 20. 



Description. — Test composed of several chambers arranged in a 

 planospiral or oblique nautiloid more or less involute spiral, chambers 

 not greatly inflated, only those of the last-formed volution visible; 

 wall smooth, perforations small and indistinct; aperture a curved 

 opening at the base of the inner face of the chamber. 



The genus is only superficially like the others of the Globigerinidae. 

 P. ohliquiloculata is more nearly like them than are the others, being 

 more inflated, having a large aperture, and being rather coarsely 

 perforate. 



The other two recent species much more resemble species of 

 Nonionina, but they do not have any of the characteristic complex 

 structures of the Nummulitidae. 



P. ohliquilocvlata is a pelagic species, as much of its structure 

 indicates, and may really differ generically from the other two. 



PULLENIA SPHAEROIDES (D'Orbigny). 



Plate 8, figs. 3, 4. 



Nonionina sphaeroides D'Orbigny, Ann. Sci. Nat., vol. 7, 1826, p. 293, 



No. 1; Modeles, No. 43. 

 Pullenia sphaeroides Parker and Jones, in Carpenter, Parker, and Jones, 



Introd. Foram., 1862, p. 184, pi. 12, fig. 12; Philos. Trans., vol. 155, 



