FORAMINIFERA OF THE ATLANTIC (HMOAX. 91 



In 191 1 in the above reference I limited the genus Bi/liniina to that 

 group of species wliicJi show a triserial arrangement of chambers 

 and a more or less regular form, erecting two new genera. Bnlrminella 

 and Bvlrminoiden. 



The genus Biilimhia as llms (hstinguished includes numerous 

 smooth species and others ornamented ])y spines or raised costae. 

 The genus is widely distributed, some of the species having a very 

 wide range, while others appear to be more restricted. Tlie recent 

 species are all forms with calcareous secreted tests, and in the fossil 

 forms, especially in the lower Cretaceous, (here are numerous species 

 which liave an arenaceous test. 



BULIMINA MARGINATA d'Orbigny. 



Plate 21, figs. 4, 5. 



BuUminn nKirginaia d'Orbigny, Ann. Sci. Nat., vol. 7, 1820, p. 269, No. 4, pi. 

 12, figs. 10-12. — Parker and Jones, Ann. Mag. Nat. Hist., aer. 2, vol. 19, 

 1857, p. 296, pi. 11, figs. 35-40. — Balkwill and Wright, Proc. Roy. Irish 

 Acad., ser. 2, vol. 3, 1882, p. 447. — H. B. Brady, Rep. Voy. Challenger. 

 Zoology, vol. 9, 1884, p. 405, pi. 51, figs. 3-5. — Balkwill and Wright, Trans, 

 Roy. Irish Acad., vol. 28, 1885, p. 333.— H. B. Brady, Journ. Micr. Soc, 



1887, p. 897. — H. B. Brady, Parker, and Jones, Trans. Zool. Soc, vol. 12. 



1888, p. 220, pi. 43, figs. 7, 10.— Wright, Proc. Roy. Irish Acad., ser. 3, vol. 



1, 1891, p. 474.^ — Robertson, Trans. Nat. Hist. Soc. Glasgow, vol. 3, pt. 3, 



1892, p. 240.— Egger, Abh. kon. bay. Akad. Wiss. Miinchen, CI. II, vol. 18, 



1893, p. 287, pi. 8, figs. 69, 70.— Goes, Kongl. Svensk. Vet. Akad. Handl., 

 vol. 25, No. 9, 1894, p. 46, pi. 9, figs. 439-444.— Millett, Journ. Roy. Micr. 

 Soc, 1899, p. 277.— Earland, .Journ. QuekettMicr. Club, ser. 2, vol. 9, 1905, 

 p. 207. — Chapman, Trans. New Zealand Inst., vol. 38, 1905, p. 89. — Heron- 

 Allen and Earland, Journ. Roy. Micr. Soc, 1908, p. 312. — Chapman, Rep. 

 Foram. Subautarctic Ids. New Zealand, 1909, p. 330. — Sideijottom, Mem. 

 Proc. Manchester Lit. Philos. Soc, vol. 54, pt. 3, 1910, p. 12.— Cushman> 

 Bull. 71, U. S. Nat. Mus., pt. 2, 1911, p. 83, figs. 136a, b (in text).— Heron- 

 Allen and Eari-and, Proc Roy. Irish Acad., vol. 31, pt. 64, 1913, p. 63; 

 Journ. Roy. Micr. Soc, 1916, p. 42; Trans. Linn. Soc London, vol. 11, ser. 



2, 1916, p. 236.— Mestayer, Trans. New Zealand Inst., vol. 48, 1916, p. 

 129. — Sidebottom, Journ. Roy. Micr. Soc, 1918, p. 123.— Cushman, Proc 

 U. S. Nat. Mus., vol. 56, 1919*, p. 605; Bull. .100, U. S.Nat. Mus., vol. 4, 1921, 

 p. 159. 



Bulimina pupoides d'Orbigny, var. rnarginata Williamson, Rec. Foram. (Jreat 



Britain, 18.58, p. 62, pi. 5, figs. 126, 127. 

 Bulimina presli Reuss, var. rnarginata Parker and Jones, Philos. Trans., vol. 



155, 1865, p. 372, pi. 15, fig. 10; pi. 17, fig. 70. 



Description. — Test ovate, somewhat tapering; chambers numerous, 

 inflated, all visible from the exterior, vential margin of the chambers 

 extending out from the preceding by a definite acute angle, forming 

 a definite rim to the chamber which has a series of short spines or 

 crenulations, the remainder of the chamber smooth and curved; 

 sutures distinct, depressed, w^all thin and transparent, usually in 



