84 



BULLETIN 71, UNITED STATES NATIONAL MUSEUM. 



The species may be confused on one hand with Bulimina inflata, 

 which, however, has ribs running up on the face of the chambers, 

 these in B. marginata being smooth, and with B. aculeata on the other 

 hand, which has long spines over the chamber wall on the early 

 chambers, in adult specimens the last formed chambers being smooth. 

 In B. marginata the lower margins of all chambers are serrate with 

 little difference in the earlier and later formed in tins respect. 



BULIMINA INFLATA Seguenza. 



Bulimina inflata Seguenza, Atti Accad. Gicenia Sci. Nat., ser. 2, vol. 18, 1862, 

 p. 109, pi. 1, fig. 10. — Schwager, Novara Exped. geol. Theil, vol. 2, 1866, p. 

 246, pi. 7, fig. 91.— H. B. Brady, Rep. Voy. Challenger, Zoology, vol. 9, 

 1884, p. 406, pi. 51, figs. 10-13.— H. B. 

 Brady, Parker, and Jones, Trans. Zool. 

 Soc, vol. 12, 1888, p. 220, pi. 43, fig. 9 — 

 Wright, Proc. Roy. Irish Acad., ser. 3, vol. 

 1, 1891, p. 474.— Egger, Abh. kon. bay. 

 Akad. Wiss. Miinchen, CI. n, vol. 18, 1893, 

 p. 288, pi. 8, fig 85. — Chapman, Proc. Zool. 

 Soc. London, 1895, p. 22.— Goes, Bull.Mus. 

 Comp. Zool., vol. 29, 1896, p. 46.— Flint, 

 Rep. U. S. Nat. Mus., 1897 (1899), p. 291, 

 pi. 37, fig. 5.— Millett, Journ. Roy. Micr. 

 Soc, 1899, p. 279.— Bagg, Proc. U. S. Nat. 

 .Mus., vol. 34, 1908, p. 135. 



Description. — Test short, ovate, com- 

 posed of overlapping chambers, triserial, 

 the sutures deep ; edge of chamber extend- 

 ing out into a free winglike expansion with 

 a crenulated border extending outward 

 into short spines, from which raised costae 

 extend back into the outer surface of the 

 chambers; upper portions of the chambers 

 smooth and unornamented ; wall trans- 

 parent and thin in the young, becoming 

 thickened and white in the adult ; aperture 

 an obliquely placed slit, elongated, widest 

 near the upper end, usually with a raised 



border, and often with a lip extending in fig. i37.-bulimina~inflata. x go. 

 on the concave side. a > FR0NT VIEW ; b > apertural 



Length, 0.4-1.0 mm. 



Distribution. — This species seems to be widely distributed in the 

 North Pacific. It was recorded by Brady from ( 'haUenger station 209, 

 in 95 fathoms, near the Pliilippine Islands. Goes records it from two 

 Albatross stations in the eastern part of the tropical Pacific, in 695 

 and 995 fathoms. Bagg found it in material from four Albatross 

 stations near the Hawaiian Islands, in 384-1,307 fathoms. In my 



