22 BULLETIN 71, UNITED STATES NATIONAL MUSEUM. 



the Hawaiian Islands, and from several Nero soundings, especially 

 between Guam and Yokohama, but never in any considerable num- 

 bers. 



PULLENIA OBLIQUILOCULATA Parker and Jones. 

 Plate 10, fig. 3; plate 12, figs. 2, 3. 

 Pullenia obliquiloculata Parker and Jones, Philos. Trans., vol. 155, 1865, p. 368, 

 pi. 19, figs. 4a, b.—R. B. Brady, Quart. Journ. Micr. Sci., vol. 19, 1879, 

 p. 294; Rep. Voy. Challenger, Zoology, vol. 9, 1884, p. 618, pi. 84, figs. 16-20 — 

 Egger, Abh. kon. bay. Akad. Wiss. Munchen, CI. n, vol. 18, 1893, p. 372, 

 pi. 13, figs. 62-64.— Goes, Bull. Mus. Comp. Zool., vol. 29, 1896, p. 68 — 

 Flint, Rep. U. S. Nat. Mus., 1897 (1899), p. 324, pi. 70, fig. 6.— Millett, 

 Journ. Roy. Micr. Soc, 1903, p. 692.— Bagg, Proc. U. S. Nat. Mus., vol. 34, 

 1908, p. 155. 



Description. — Test obliquely nautiloid, subglobular, inequilateral, 

 outer volution only visible, consisting of about five chambers, cham- 

 bers inflated, sutures somewhat depressed; wall smooth; aperture a 

 long, narrow, curved slit at the inner margin of the chamber. 



Diameter, 0.50-0.90 mm. 



Distribution. — This has proved to be one of the most common and 

 widely distributed species of the North Pacific. Brady recorded it 

 from four Challenger stations in the North Pacific ranging in depth 

 from 345 to 2,100 fathoms. Goes records its occurrence in the west- 

 ern Pacific and Bagg found it in material from ten Albatross stations 

 off the Hawaiian Islands, depths ranging from 104 to 1,544 fathoms. 



I have records of the occurrence of this species at seventy-five Nero 

 stations between Guam and Yokohama and it has occurred also at 

 numerous Albatross, Nero, and Tuscarora stations well scattered over 

 the area. The depths have a range from 268 to 2,175 fathoms. 



This species is the only one of the genus which has been found as a 

 pelagic form. It is noteworthy that the pores of this species are 

 much larger than those of the other two. 



Family 9. NUMMULITIDAE. 



Test calcareous, perforate, the chambers usually numerous, ar- 

 ranged in a spiral, either umbilicate or completely involute, surface 

 variously ornamented; chamber walls in the higher forms with 

 secondary canal system. 



This family includes some of the largest and most complex of the 

 Foraminifera and also from a paleontological viewpoint some of the 

 most important rock builders. As a rule the largest species are 

 characteristic of shallow tropical waters, especially of coral reefs. As 

 such they are not common in the material which I have had available 

 for this paper. However certain isolated regions as the Hawaiian 

 Islands, Guam, and the southern tip of Japan have given records for 

 most of the tropical species and the smaller colder water species of 

 Nonionina and Polystomella have often been found in considerable 

 numbers. 



