Foraminifera 7M 
Trochammina nana (H. B. Brady.) 
(Plate I, figure 4.) 
Haplophragmium nanum H. B. Brady, Quart. Journ. Micros. Sci. vol. 21, 1881, 
p. 50, Rep. Voy. Challenger, Zoology, vol. 9, 1884, p. 311, pl. 35, figs. 6-8.— 
Awerinzew, Mem. Acad. Imp. Sci. St. Petersburg, ser. 8, vol. 29, No. 3, 
1911, p. 21. 
Trochammina nana Cushman, Bull. 71, U.S. Nat. Mus., pt. 1, 1910, p. 123, 
figs. 190-192.—Pearcey, Trans. Roy. Soc. Edinburgh, vol. 49, 1914, p. 1010. 
Several very typical specimens were obtained at Station 29g. These have 
a reddish brown cement, giving colour to all but the last-formed chamber, 
which is in all cases lighter in colour than the rest, often nearly white. 
From the records this species seems to be characteristic of cold waters. 
Brady gives the most characteristic material from off Franz Josef land, very 
abundant at depths of 89-145 fathoms. He also records it from Nova Zembla, 
65-219 fathoms. Kiaer records it from the American Arctic, and Awerinzew 
from several stations in the Siberian Arctic. Pearcey records it from the Ant- 
_arctic, and from Stanley harbour, Falkland islands, in 25 fathoms. There are 
numerous records of its occurrence in deep cold waters of the various ocean 
basins. 
Trochammina squamata Jones and Parker. 
Trochammina squamata Jones and Parker, Quart. Journ. Geol. Soc., vol. 16, 
1860, p. 304.—W. B. Carpenter, Parker and Jones, Intr. Foram., 1862, 
p. 141, pl. 11, fig. 1—H. B. Brady, Rep. Voy. Challenger, Zoology, vol. 9, 
1884, p. 337, pl. 41, figs. 3 a-c.—Cushman, Bull. 71, U.S. Nat. Mus., pt. 1, 
1910, p. 120, fig. 187a, b—Heron-Allen and Earland, Proc. Roy. Irish 
Acad., vol. 31, pt. 64, 1918, p. 50, pl. 3, figs. 7-10. 
Several specimens from station 20 b-c, with occasional spicules in addition 
to the sand grains, yellowish brown in colour, the underside with the last-formed 
chamber, large and scale-like, covering nearly one-third the area of the whole 
base. 
From station 43c there is a single specimen, somewhat thicker but generally 
similar. © 
; Here again it is possible.that more than one species have been included 
under one name by various writers. The species is not a characteristic Arctic 
one. 
Spiroplecta biformis (Parker and Jones.) 
Textularia agglutinans, var. biformis Parker and Jones, Phil. Trans., vol: 155, 
1865, p. 370, pl. 15, figs. 28, 24. 
Textularia biformis H. B. Brady, Ann, Mag. Nat. Hist., ser. 5, vol. 1, 1878, 
p. 436, pl. 20, fig. 8. 
Spiroplecta biformis H. B. Brady, Rep. Voy. Challenger, Zoology, vol. 9, 1884, 
p. 376, pl. 45, figs. 25-27—Goés, Kongl. Svensk. Vet. Akad. Handl., vol. 
25, No. 9, 1894, p. 38, pl. 7, figs. 308-312 —Awerinzew, Mem. Acad. Imp. 
Sci., St. Petersburg, ser. 8, vol. 29, No. 3, 1911, p. 17—Heron-Allen and 
Earland, Proc. Roy. Irish Acad., vol. 31, pt. 64, 1913, p. 56.—Pearcey, 
Trans. Roy. Soc. Edinburgh, vol. 49, 1914, p. 1012. 
A single specimen from station 29g with the initial end broken, but the 
- characteristic marks so clearly in evidence that there is no question of its identity. 
This is a characteristic Arctic and cold-water species. Brady records it from 
Franz-Josef'land, 113-145 fathoms; west coast of Nova Zembla, 55-70 fathoms; 
