REPORT ON FORAMIXIFERA AND OSTRACODA 61 



of sponge spicules used in the construction of its test ; but they are mainly concentrated 

 at two points on the periphery, whilst the wall itself is composed of fine grey mud, 

 with an occasional spicule. 



The above species is rare, being sparsely scattered over a wide area. It does not 

 appear to have been previously recorded from the Pacific. 



Occurrence. — Sample No. 1, 110 fathoms, one specimen. 



Sub -family — Saccamminin^e 

 Genus — Saccammina, M. Sars, 1868 

 • Saccammina spliodrica, M. Sars (Plate II, fig. 12) 



Saccammina splimrica, M. Sars, H. B. Brady, 1884, Rep. CM!., vol. ix, p. 253, 

 pi. xviii, figs. 11-17. Flint, 1899, Rep. U. S. Nat. Mus. for 1897, p. 269, pi. ix, fig. 2. 



The tests of the Antarctic specimens are coarsely arenaceous, and are distinguished 

 from Psammosphcera by the small, inconspicuous, papillate aperture.* Sometimes 

 two chambers are conjoined very firmly, after the manner of the Carboniferous species, 

 S. fusuliniformis, McCoy, sp. (usually erroneously referred to as S. carteri).^ 



S. splicerica is found living within the Arctic Circle, and was only twice recorded by 

 the Challenger — once in deep water in the North Pacific, east of Japan, 2050 fathoms, 

 and at the Antarctic Ice Barrier. J It has also been noted by Dr. Flint from the South 

 Atlantic, off the Coast of Brazil, at 1019 fathoms. It will thus be seen that, whereas 

 in the higher latitudes it is found in only moderately deep water, in low latitudes it is 

 invariably found at abyssal depths. Its path through the interpolar tracts, whether 

 in the Atlantic or Pacific, has been along the deepest parts of those ocean basins. 



Occurrence.— Sample No. 3, 121 fathoms, common ; No. 4, 153 fathoms, frequent ; 

 No. 5, 171 fathoms, frequent. 



Sub -family — Khabdammininje 



Genus — Hyperammina, H. B. Brady, 1878 



Hyperammina elongata, H. B. Brady (Plate II, fig. 13) 



Hyperammina elongata, H. B. Brady, 1884, Rep. Chall., vol. ix, p. 257, pi. xxiii, 

 figs. 4, 7-10. 



H. elongata is chiefly a N. Atlantic form, and has occurred as far north as Franz- 

 Josef Land. It has been previously recorded from the Southern Ocean between the 

 Cape of Good Hope and Kerguelen Island at 1570 fathoms. 



Occurrence.— Sample No. 7, 225 fathoms, very rare ; No. 9, 360 fathoms, very rare. 



Genus — Marsipella, Norman, 1878 



Marsipella elongata, Norman (Plate II, fig. 14) 



Marsipella elongata, Norman, 1878, Ann. Mag. Nat. Hist., ser. 5, vol. i, p. 281, 

 pi. xvi, fig. 7. H. B. Brady, 1884, Rep. Clmll., vol. ix, p. 264, pi. xxiv, figs. 10-19. 

 Flint, 1899, Rep. U.S. Nat. Mus. for 1897, p. 270, pi. xii, fig. 1. 



* Since this description was written, Messrs. Heron- Allen and Earland have published an ex- 

 haustive examination of the grounds of separation of Psammosphcera fusca and Saccammina 

 spha-rica, and have dissipated the suggestion that the two forms are identical (see Journ. R. Micr. 

 Soc. 1913, pp. 1-26, pi. i-iv). 



t Chapman, Ann. Mag. Nat. Hist., ser. 7, vol. i, 1895, p. 215, woodcut. 



J Brady, op. supra cit., p. 252. 



