62 



BULLETIN 71, UNITED STATES NATIONAL MUSEUM. 



fathoms, near the Hawaiian Islands, station 1012, in 1,932 fathoms, 

 north of Guam, and at Albatross stations D4970 and D4979, 

 southeast of Japan, in 500 and 743 fathoms. At the last station it 

 occurs with the typical form. 



This variety seems to be rather distinct, 

 and should be more definitely recorded, as it 

 lias certain characters of more than varietal 

 rank, but it is kept here for the present. 



HYPERAMMINA FRIAB1LIS H. B. Brady. 



Hyperammina elongata H. B. Brady (part), Ann. 

 Mag. Nat. Hist., ser. 5, vol. 1, 1878, p. 433; 

 Quart. Journ. Micr. Sci., vol. 19, 1879, p. 32. 



Hyperammina friabilis H. B. Brady, Rep. Voy. 

 Challenger, Zoology, vol. 9, 1884, p. 258, pi. 23, 

 figs. 1-3, 5, 6. — Goes, Kongl. Svensk. Vet. Akad. 

 Handl., vol. 25, No. 9, 1894, p. 17, pi. 4, fig. 59; 

 Bull. Mus. Comp. Zool., vol. 29, 1896, p. 22.— 

 Flint, Rep. U. S. Nat. Mus., 1897 (1899), p. 269, 

 pi. 10, fig. 1. — Rhumbler, Arch. Protistk., vol. 

 3, 1903, p. 258, fig. 99 a, b, in text. 



Description. — Test elongate, subcylindrical, 

 or tapering somewhat toward the distal end, 

 nearly straight, test composed of coarse sand 

 grains, wall thick and loosely cemented, ex- 

 terior roughened, interior rather smooth, proxi- 

 mal end closed, forming a nearly spherical 

 proloculum from which the elongated tubu- 

 lar portion originates, not always distinct 



Fig. 76. — Hyperammina feia- p ,i , • , , ,1 i- , i i 



BiLis. specimen with the up- from the exterior; aperture at the distal end 

 pee portion of the tube small, nearly circular; color gray, often red- 

 brokenaway. x so. dish-brown about the aperture and on the 



inner parts of the wall where there is more cement. 

 Diameter 2 mm., length up to 15-16 mm. 



Distribution. — I have found specimens apparently of this species 

 from four North Pacific stations: Albatross station D2806 in 1,329 

 fathoms near the Galapagos Islands, station D3608 from Holo- 

 thurian stomachs; from Bering Sea, 279 fathoms; and at Nero station 

 1528, east of Guam, in 2,391 fathoms. A single specimen was found 

 at Albatross station H4014, in 3,800 fathoms, the deepest record 

 for this species. One specimen was found from Albatross station 

 D4334, off California. 



