FOKAMINIFERA OF NORTH PACIFIC OCEAN. 



83 



ground south of Jap aji. I have not found any specimen sufficiently 

 elongated to warrant their being placed in this variety. The figure 

 and description are from Brady. 



BULIMINA MARGINATA d'Orbigny. 



Bulimina marginata d'Orbigny, Ann. Sci. Nat., vol. 7, 182(1, p. 269, No. 4, pi. 



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



1857, p. 296, pi. 11, figs. 35-40.— H. B. Brady, Rep. Voy. ( 'hallmger, Zoology, 



vol. 9, 1884, p. 405, pi. 51, figs. 3-5.— 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.— 



Egger, Abh. kon. bay. Akad. Wiss. Mim- 



chen, CI. n, 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. 

 Bulimina pupoidet, var. marginata Williamson, 



Rec. Foram. Great Britain, 1858, p. 62, pi. 



5, figs. 126, 127. 

 Bulimina presli, var. marginata Parker and 



Jones, Philos. Trans. Roy. Soc, vol. 155, 



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



Description. — Test ovate or tapering; 

 chambers numerous, inflated, all visible 

 from the exterior; sutures deep; lower 

 margins of the chambers extending back 

 with a free edge which is serrate, or may be 

 only crenulate, or even spinose; remaining 

 portion of chamber smooth and unorna- 

 mented; wall thin and transparent, or in 

 older specimens thickened, white, and 

 nearly opaque; aperture a comma-shaped 

 slit in a slight depression of the inner face 

 of the chamber, with a slightly raised border. 



Length usually under 1 mm., but some 

 specimens slightly larger. 



Distribution. — This species has been recorded once from the North 

 Pacific. It occurred at Challenger station 232 on the IDjalonema- 

 ground south of Japan, in 345 fathoms. In the present collection 

 I have seen specimens from two Albatross stations off Japan, D4972, 

 in 440 fathoms, and D5056, in 258 fathoms. Specimens were also 

 found in the Nero material from three stations near the Bonin Islands, 

 south from Japan, in 1,208-1,760 fathoms. All the records for this 

 species in the North Pacific are therefore from the faunal region of 

 Japan, and adjacent waters. The recorded distribution of the species 

 elsewhere is very wide, both as to geographical and bathymetrical 

 range. 



Fig. L36.— Bulimina marginata. 



X 1-50. a. FRONT VIEW; b, APER- 

 TURAL VIEW. 



