FORAMINIFERA OF NORTH PACIFIC OCEAN. 



39 



gins; apical end blunt, rounded; no keel developed on the early 

 chambers, but in the later prominent though rather narrow; cham- 

 bers well rounded; sutures limbate with raised beads near the junction 

 with the chambers of the opposite series; wall calcareous, smooth 

 except for the sutures and occasional costse near the border of the 

 test; aperture rather large, somewhat elongate, with an oblique pro- 

 jecting tooth; color white. 



Length 0.50-0.65 mm. 



Distribution. — This species has not previously been recorded from 

 the North Pacific. Brady described it from specimens from Humboldt 

 Bay, New Guinea, in 37 fathoms, and doubtful specimens from 

 Torres Strait, in 155 fathoms. Millett records the species from the 

 Malay Archipelago. 



There are typical specimens from Nero station 1472, in 1,000 fath- 

 oms, near Guam. These are the only ones I have seen from the North 

 Pacific. Apparently the species is limited to the Australasian region 

 and the East Indian archipelago. 



BOLIVINA NOBILIS Hantken. 



Bolivina nobilis Hantken, Magy. kir. foldt. int. evkonyve, vol. 4, 1875 (1876), 

 p. 56, pi. 15, fig. 4, Mitth. Jahrb. Ung. geol. Anstalt, vol. 4, 1875 (1881), 

 p. 65, pi. 15, fig. 4. — H. B. Brady, Rep. Voy. Challenger, Zoology, vol. 9, 

 1884, p. 424, pi. 53, figs. 14, 15. — Chapman, Quart. Journ. 

 Geol. Soc, vol. 48, 1892, p. 516, pi. 15, fig. 11.— Millett, 

 Journ. Roy. Micr. Soc, 1900, p. 541, pi. 4, fig. 4. — Chap- 

 man, Journ. Linn. Soc. Zool., vol. 30, 1907, p. 32, pi. 4, 

 fig. 81.— Bagg, Proe. U. S. Nat. Mus., vol. 34, 1908, p. 138. 



Description. — Test much elongated, slender, some- 

 what compressed; sides nearly parallel but tapering 

 rather quickly to a blunt point at the apical end, 

 apertural end obliquely truncate; chambers numerous, 

 high, somewhat inflated; sutures slightly depressed; 

 wall calcareous, the apical portion with fine longitu- 

 dinal costae, the apertural end smooth ; aperture oval, 

 in some specimens, w r here a uniserial condition is 

 attained, remote from the border and subterminal, 

 otherwise reaching to the preceding chamber as also in 

 the young; color white. 



Length up to 1.20 mm. 



Distribution. — All the Challenger stations for this 

 species are in comparatively shallow water in the South 

 Pacific. Bagg's records for the species are from Alba- 

 tross station H4567, in 1,307 fathoms, and station 

 H4696, in 367 fathoms, near the Hawaiian Islands. I have examined 

 the specimens from these two stations and find that they are of the 

 long slender type with finely costate apical ends. 



Fig. 64.— Bolivina 

 nobilis. x 40. 



a, APERTURAL 

 VIEW; 6, FRONT 

 VIEW. 



