FORAMINIFERA OF NORTH PACIFIC OCEAN. 



61 



tube, little if at all constricted; color gray, sometimes brown, de- 

 pending largely upon the color of the sand grains. 



Diameter about 0.5 mm.; length up to 8 mm. 



Distribution. — This species seems to be well distributed in the 

 North Pacific. The Challenger records note it but twice in this 

 region, in the abyssal region at 2,300 and 3,125 fathoms. Goes 

 records it from two stations in the southeast portion of the region, 

 Albatross stations D3375, 1,201 fathoms, and D3407, 885 fathoms. 



I have records of its occurrence at about twenty Albatross and 

 Nero stations in 110-2,848 fathoms. These stations are off Cali- 

 fornia, near Hawaii, several near the Bonin Islands, five on the 

 southeast coast of Japan, and two in Bering Sea. 



Specimens of this species are usually without the proloculum, but a 

 number of specimens in the present series show the complete test. 

 It is of sand grams, coarse for the size of 

 the tube as a rule, and the proximal end is 

 broad and almost flattened in some cases. 

 It is rather distinct from the following 

 variety, although the two have been found 

 in company with one another at one 

 station. 



HYPERAMMINA ELONGATA H. B. Brady, var. 

 LAEVIGATA J. Wright. 



Hyperammina elongata H. B. Brady (part), 



Rep. Voy. Challenger, Zoology, vol. 9, 1884. 



p. 257, pi. 23, figs. 9, 10 (not 3, 7, 8).— 



Goes, Kongl. Svensk. Vet. Akad. Handl., 



vol. 25, no. 9, 1894, p. 17, pi. 4, fig. 55 (not 



56-58).— Flint, Rep. U. S. Nat. Mns., 1897 



(1899), p. 270, pi. 10, fig. 2 (in part),- 



Rhumbler, Arch. Protistk., vol. 3, 1903, 



p. 258 (in part). 

 Hyperammina elongata H. B. Brady, var. 



laevigata J. Wright, Proc. Roy. Irish Acad., 



ser. 3, vol. 1, 1891, p. 466, pi. 20, fig. 1. 



Description. — Variety differing from the 

 typical in its smooth test, great excess of 

 cement, color yellowish or reddish brown, 

 and the proloculum ovoid, somewhat f usi- 

 iform in shape, but little larger in di- 

 ameter than the tube but with somewhat 

 of a constriction where it unites with the 

 tube; usually of smaller size than the 

 typical form. 



Distribution. — Apparently more rare in 

 the North Pacific than the typical, but not so everywhere. I have 

 found specimens of this variety from Nero station 12, in 1,924 



Fig. 75.— Hyperammina elongata, 

 var. laevigata. specimen from 

 Albatross station D4979, off Japan. 

 X40. 



