FORAMINIFEKA OF NORTH PACIFIC OCEAN. 109 



Distribution. — This species has occurred at numerous stations in 

 the region between Yokohama and Guam, depths ranging from 859 

 fathoms to 1,660 fathoms. Type, Cat. No. 8552, U.S.N.M., from Nero 

 station 1472 in 1,000 fathoms. No bottom temperatures are recorded 

 for any of the stations at which this species has occurred, but where 

 they are given from adjacent stations they are below 40° F. 



The fine striate surface and the form of the aperture will serve to 

 distinguish this species. 



SIPHOGENERINA IRREGULARIS (Bagg). 

 Plate 47, figs. C, 7. 



Sagraina irregularis Bagg, Proc. U. S. Nat. Mua., vol. 34, 1908, p. 152, pi. 5, 

 figs. 8-10. 



Description. — Test elongate, subcylindrical; chambers somewhat 

 irregular, but becoming uniserial in the later developed portion; 

 variable as regards height of individual chambers ; surface ornamented 

 with very fine costse; wall thin and translucent, apertural end of the 

 chamber depressed; aperture slightly excentric, with a long tubular 

 neck and a slightly flaring lip. 



Length 0.75 to 1.50 mm. 



Distribution. — Bagg described this species from Albatross material 

 dredged near the Hawaiian Islands, D4025 in 275 to 368 fathoms and 

 H4571 in 384 fathoms. I have found the species at four stations in 

 this same region, Albatross H2922, H2923, and H2986 in 268, 392, 

 and 271 fathoms. It also occurred at Nero station 2071, in 271 

 fathoms. But one station, H2922, has the bottom temperature 

 recorded, this being 44.8° F. However, the adjacent station to 

 H2986 at nearly the same depth has a recorded temperature of 48.1° 

 F. Evidently this species is a somewhat local one, but is to be 

 watched for elsewhere under similar conditions. This belongs to 

 Si pliogenerina, as is shown by the figure of the interior, fig. 7. 



There is a specimen from Nero station 166 in 1,850 fathoms north- 

 east of Midway Island, which has many of the characteristics of this 

 species, but the costse are much coarser. It may be a deep-water form 

 of this species. Bagg speaks of this species as resembling S. striata 

 (Schwager), but it much more closely resembles the figure given by 

 Schwager l and named by him Uvigerina nitidula. 



SIPHOGENERINA (?) ANNULATA (H. B. Brady). 



Plate 37, figs. 8, 9. 



Sagrina (?) annulata H. B. Brady, Rep. Voy. Challenger, Zoology, vol. 9, 1884, 

 p. 586, pi. 76, figs. 20, 21. 



Description. — "Test subcylindrical; oral end rounded, aboral ex- 

 tremity obtusely angular or rounded; composed of few (two to four), 

 elongate, somewhat inflated segments, united end to end. Surface 



i Novum Exped., Geol. Theil, vol 2, 18G7, pi. 7, fig 93. 



