FORAMINIFERA OF NORTH PACIFIC OCEAN. 63 



Distribution. — The Challenger, from Brady's records, did not 

 obtain this species from the North Pacific. Goes records it at 

 Albatross station 3395 in 730 fathoms. Bagg found it from about 

 the Hawaiian Islands at 13 Albatross stations, veiy abundant, rang- 

 ing in depth from 104 to 1,544 fathoms. I have obtained it from 

 a number of stations about the Hawaiian Islands, off the west coast 

 of America, and Guam, and off Japan, depths ranging from 181 to 

 1,355 fathoms. 



TRIPLASIA REUSSU, new name. 



Plate 39, fig. 3. 



Rhabdogonium minutum H. B. Brady (not R. minutum Reuss), Rep. Voy. 

 Challenger, Zoology, vol 9, 1884, p. 526, pi. 67, figs. 4-6.— Bagg, Proc. U. S. 

 Nat. Mus., vol. 34, 1908, p. 145. — Chapman, Journ. Linn. Soc. London, 

 Zool., vol. 30, 1910, p. 412 [?]. 



Description. — Test thick and short, triangular in cross section, 

 chambers few, somewhat elongate, somewhat carinate, walls roughish, 

 thick; aperture with a short neck, fairly large, often with a fringe-like 

 cutting about the opening. 



Length, about 0.8 mm. 



Distribution. — Brady found this species off the Ki Islands, south- 

 west of New Guinea, 129 fathoms. Bagg records it from several sta- 

 tions about the Hawaiian Islands in 104 to 1,544 fathoms. 



This species is rare in the North Pacific. It can easily be distin- 

 guished from T. tricarinatum by its more irregular form, short, thick 

 chambers, roughened surface, and different apertural characters. 



To unite this recent tropical species with Rhabdogonium minutum 

 Reuss is rather a difficult problem, as Reuss's figure shows a com- 

 pressed form entirely different in all its general characters. As the 

 recent species seems to be entirely distinct from the fossil species 

 described by Reuss from Galicia, a new name is here given to the 

 recent species. 



Genus CRISTELLARIA Lamarck, 1812. 



Nautilus (part) Linnaeus, Syst. Nat., ed. 12, 1767, p. 1162. 

 Lenliculites (part) Lamarck, Annales du Museum, vol. 5, 1804, p. 188. 

 Cristellaria Lamarck, (Type, Cristellaria calcar (Linnaeus)) Extract Cours 



Zool., 1812, p. 122.— H. B. Brady, Rep. Voy. Challenger, Zoology, vol. 9, 



1884, p. 534. 



Description. — Test planospiral, typically close coiled, but becoming 

 much uncoiled in some species; chambers numerous; wall hyaline, 

 perforate; variously ornamented; aperture usually distinctly radiate. 



This genus is one of the most interesting of the various genera of 

 the Lagenidse. It shows a great range of characters along several 

 lines. The test may be close coiled typically, but in some species 

 becomes uncoiled early, and the resulting development is often almost 



