LITUOLIDAE m 



record is at St. WS 383, where it is frequent in 2085 m. There is considerable range in 

 the size and development of specimens, and the species is not always easy to identify in 

 company with young individuals of M. arenacea. 



218. Miliammina oblonga, Heron-Allen and Earland (SG 149). 



Fifty-eight stations: 167, 169, 170, 171, 177, 180, 181, 185-7, 190-2, 194-6, 198-200, 202, 204, 

 206, 209, 365, 369, 377; 62° 57' S, 60° 20' 30" W; 64° 56' S, 64° 43' W; WS 382-7, 391, 393-6, 399, 

 400, 475, 476, 479, 480, 482, 483, 485-9, 496, 510-13, 515. 



Generally distributed in all the areas within the Antarctic convergence line, and some- 

 times very common, notably at Sts. 167 in the South Orkneys (244 m.), WS 384, 385, 

 386, 395 and 479, all of which are in the Bransfield Strait with depths varying between 

 297 and 1957 m., and St. WS 512 in the BelHngshausen Sea, depth 652 m. It is rare at 

 the South Sandwich stations, and like all the other species of the genus is absent from 

 the deep-water stations in the Weddell Sea. Depth does not appear to have much in- 

 fluence, within limits, as the range extends between 50 and 4517 m., and its frequency 

 is as variable as the limits are wide. The species runs very true to type, and only one 

 abnormal specimen composed of two individuals fused at divergent angles was observed. 

 This was found at St. 204 (843 m.) in the Bransfield Strait, where the species was 

 frequent. 



219. Miliammina lata, Heron-Allen and Earland (SG 151). 



Sixty stations: 162, 167, 171, 175, 177, 180, 181, 185-7, 194, 196, 197, 199, 200, 202-4, 206, 363, 

 366; 62°57'S, 60° 20' 30" W; 64°56'S, 64°43'W; WS 382, 384-7, 391-6, 400, 475, 476, 480, 



482-9, 494 A, 494B, 496, 497, 506, 507 A, 507 B, 509-15. 



This species is generally distributed all over the area within the Antarctic convergence 

 line, at stations of moderate depth. The only stations deeper than 1000 m. at which it 

 occurs with any frequency are WS 384 (1957 m.), WS 385 (1838 m.) and WS 400 

 (4517 m.). At all these stations the specimens are very small and pauperate. St. WS 400 

 is in the deep water of the Drake Strait, off^ the South Shetland Islands, while WS 384 

 and 385 are in the Bransfield Strait, in which area the species is rare, irrespective of 

 depth, an exception being St. 177 (1080 m.), where specimens were common and well 

 developed. It is common and large at St. 363, frequent at St. 366, both in the South 

 Sandwich Islands, where the tests are dark owing to the admixture of volcanic sand ; 

 common at Sts. 180, 181 and 186 in the Palmer Archipelago, specimens large and hght 

 grey in colour; frequent to very common at the series of Sts. WS 496-515 in the 

 BelHngshausen Sea, at all of which the specimens are nearly white and very well 

 developed. At all other stations with few exceptions it is comparatively rare and often 

 represented by one or two specimens. Very little variation was observed except in size 

 and colour. 



220. Miliammina circularis, Heron-Allen and Earland (Plate IV, figs. 25-29). 

 Miliammina circularis, Heron-Allen and Eadand, 1929, etc., FSA, 1930, p. 44, pi. i, figs. 18-21. 



Nine stations: 177, 180, 181, 182, 186, 203, 363, 366; WS 488. 



This species appears to be confined to a narrow belt of stations running from the 



