FOKAMINIFEEA OF NORTH PACIFIC OCEAN. 



103 



Midway Island. A single specimen from Alert station 1178 in 623 

 fathoms off San Augustino Island, belongs to this species. 



From the series of specimens I have been able to obtain for study 

 it seems a questionable point as to whether II. compressum of Goes 

 is really the same as II. emaciatum II. B. Brady. As far as I have 

 observed there is no tendency for any of the Pacific specimens to 

 uncoil in later growth, and the aperture always remains a slit at the 

 base of the apertural face. In the West Indian material which may 

 be referred to II. compressum Goes there is a decided tendency to 

 uncoil and a coincident change in the position of the aperture occurs. 

 The specimen figured by Millet seems to be a close-coiled form and 

 is included here. 



HAPLOPHRAGMOIDES SCITULUM (H. B. Brady). 



Haplophragmium scitulum II. B. Brady, Quart. Journ. Micr. Sci., vol. 21, 1881, 

 p. 50; Proc. Roy. Soc. Edinburgh, vol. 11, 1882, p. 711; Rep. Voy. Challenger, 

 Zoology, vol. 9, 1884, p. 308, pi. 34, figs. 11-13.— Chapman, Proc. Zool. Soc. 

 London, 1895, p. 16.— Flint, Rep. U. S. Nat. Mus., 1897 (1899), p. 276, pi. 

 20, fig. 2. 



Description. — Test nautiloid, planospiral, consisting of about three 

 coils, not completely involute so that at the umbilical region the 



Figs. 153-155.— Haplopiiragmoides scitulum. x 40 (after Brady). 153, side view. 154a, side 



VIEW; 6, APERTURAL VEEW. 155. SECTION. 



earlier coils are exposed; wall composed of firmly cemented sand 

 grains ; from seven to eleven chambers make up the last-formed coil, 

 the chambers being wide and broadly rouncled at their peripheral 

 edge give the whole test a much broader form than seen in H. can- 

 ariense; chambers nearly flush with one another, giving a fairly even 

 periphery to the test, aperture a somewhat curved slit at the base of 

 the apertural face; color of the test various shades of brown. 



Diameter 0.75-1 mm. 



Distribution. — This species seems to be rare in the North Pacific. In 

 the Challenger report it is recorded but once, from station 244 in 2,900 

 fathoms. Bagg records it from four Albatross stations in the vicinity 

 of the Hawaiian Islands, 367-1,544 fathoms. I have seen material 

 from but four other Albatross stations, D3431, at the entrance to 

 the Gulf of California, 995 fathoms; H2774, off the California coast 



