200 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 6 



Soc, vol. 3, 1902, p. 2 (list).— Reade, Proc. Liverpool Geol. Soc, 1903- 

 1904 (1904), pp. 5, 7 (lists).— Earland, Journ. Quekett Micr. Club, 

 ser. 2, vol. 9, 1905, p. 208.— Millett, Rec. Foram. Galway, 1908, p. 5.— 

 Heron-Allen and Earland, Journ. Roy. Micr. Soc, 1909, p. 335; I.e., 

 1910, p. 409; Proc. Roy. Irish Acad., vol. 31, pt. 64, 1913, p. 65; Journ. 

 Roy. Micr. Soc, 1916, p. 43; Trans. Linn. Soc. London, ser. 2, vol. 11, 

 1916, p. 238.— Cushman, Bull. 104, U.S. Nat. Mus., pt. 3, 1922, p. 36, 

 pi. 4, fig. 2. — Heron-Allen and Earland, Journ. Roy. Micr. Soc, vol. 50, 

 1930, p. 79. — Cushman, Special Publ. 9, Cushman Lab. Foram Res., 

 1937, p. 159, pi. 16, figs. 1-5. 



Test elongate, about 3 times as long as broad, somewhat compressed, 

 rapidly tapering at the initial end, then with the sides nearly parallel, 

 periphery broadly rounded; chambers distinct, comparatively few, height 

 and breadth about equal, of rather uniform shape throughout, increasing 

 in size as added, those of the adult portion about equal ; sutures distinct, 

 very slightly depressed, nearly horizontal or very slightly oblique; wall 

 smooth, very finely perforate; aperture broadly oval, often with distinct 

 tooth. Length 0.50 mm.; breadth 0.20 mm.; thickness 0.10-0.15 mm. 



This species is known mostly from about the British Isles. The Pacific 

 specimens are somewhat less compressed, but when compared with the 

 Atlantic specimens seem to be close enough to be included in the same 

 species. Specimens are very rare in our material. 



Stations:209, 329, 534, 1062. 



Distribution. — The four records show a range from east of Gull 

 Island off Santa Barbara Island in 21 fms. ; the region of San Benito 

 Islands in 13 fms. ; Cocos Island in 40 fms. ; olT Peru in 18 fms. 



Bolivina marglnata Cushman, var. adelaidana Cushman and 



Kleinpell 

 Plate 24, Figs. 2, 3 



Bolivina marginata Cushman, var. adelaidana Cushman and Klein- 

 pell, Contr. Cushman Lab. Foram. Res., vol. 10, 1934, p. 10, pi. 2, figs. 

 1, 2. — Cushman, Special Publ. 9, Cushman Lab. Foram. Res., 1937, p. 

 87, pi. 10, figs. 11-14. 



Variety differing from the typical in the strongly raised and limbate 

 sutures and the tendency of the chambers to become somewhat spinose at 

 the basal angle. 



