REPORT ON FORAMINIFERA AND OSTRACODA 29 



almost circular, aperture with definite T-shaped valve, and the rounded periphery. 

 The tests are here unusually large, occasionally attaining a length of 2*25 mm. 



B. elongata is a well-distributed species, occurring most frequently in moderately 

 shallow water in temperate seas, and in deeper water in the tropics. In the southern 

 hemisphere it has been recorded off Heard Island, off Kerguelen Island, and south- 

 west of Patagonia, from 20-245 fathoms. Sir J. Murray gives its bathymetrical 

 range as shore to 2025 fathoms. Small examples in the fossil condition have been 

 found in the Tertiary (Balcombian and Kalimnan) beds of Victoria. 



Genus — Miliolina, Williamson, 1858 

 Miliolina tricarinata, d'Orbigny, sp. (Plate II, Figs, la, lb) 



Triloculina tricarinata, d'Orbigny, 1826, Ann. Sci. Nat., vol. vii, p. 299, No. 7. 

 Miliolina tricarinata, d'Orb., sp. H. B. Brady, 1884, Rep. Chall., vol. ix, p. 165, 

 PI. Ill, Figs. 17a, 176. Chapman, 1909, Sub-Antarctic Islands of Neiv Zealand, vol. i, 

 art. xv, p. 320. 



The distribution of this form is very wide. It extends from the Arctic seas to 

 the Antarctic ice-barrier, and is found at all depths to 2350 fathoms. 



The only specimen found here is very small, and suggests a moderately deep water 

 habitat. 



Sub-Family — Peneroplidin^e 



Genus — Cornuspira, Schultze, 1854 



Cornuspira involvens, Reuss, sp. (Plate II, Fig. 8) 



Operculina involvens, Reuss, 1849, Denkschr. k. Akad. Wiss. Wien, vol. i, p. 370, 

 PI. XLVI, Fig. 20. Cornuspira involvens, Reuss, sp. H. B. Brady, 1884, Rep. Chall., 

 vol. ix, p. 200, PI. XI, Figs. 1-3. Egger, 1893, Abhandl. d. k. bayer. Akad. Wiss., 

 cl. ii, vol. xviii, Abth. ii, p. 246, PL III, Figs. 18, 19. Chapman, 1909, Sub-Antarctic 

 Islands of New Zealand, vol. i, art. xv, p. 325. 



This is another of the species found in the most northerly sounding made by the 

 British North Polar Expedition of 1875-76. It occurs, generally speaking, in shallow 

 to moderately deep water, but has been dredged from one depth as great as 1900 

 fathoms. Two examples, one fragmentary, occur in the present deposit. 



Family— TEXTULARIIM 



Sub-Family — Buliminin^e 



Genus — Bulimina, d'Orbigny, 1826 



Bulimina seminuda, Terquem (Plate II, Figs. 9a, 96) 



Bulimina seminuda, Terquem, 1882, Mem. Soc. Geol. France, ser. 3, vol. ii, 

 mem. iii, p. 117, PL XII, Fig. 21. B. elegantissima, d'Orbigny, var. seminuda, 

 Terquem. H. B. Brady, 1884, Rep. Chall., vol. ix, p. 403, PL L, Figs. 23, 24. 



The specimen now figured under the above name is a juvenile form of the species. 

 The general plan of structure is that of B. elegantissima, but the stouter build and 

 sometimes aborally striate shell, especially the first-named characteristic, gives 

 sufficient ground to regard this modification as a well-established form. It is, in fact, 

 a peculiarly southern type of the better-known Arctic, N. Atlantic, and sometimes 

 S. Pacific species, B. elegantissima. 



