86 DISCOVERY REPORTS 



134. Trochammina inflata (Montagu) (F 108). 

 Six stations: 149, 151 ; WS 353, 429, 522, 523. 

 Very rare and small, the best at WS 429. 



135. Trochammina malovensis, Heron-Allen and Earland(F 109) (Plate IV, figs. 38-40). 



Fifty-one stations: 13, 20, 23, 27, 30, 31, 42, 45, 123, 126, 131, 136, 140, 143, 144, 145, 148, 149, 

 i5i;WSi8, 25,27, 28, 31,32, 33,40, 41, 42, 43, 45,46,47,48, 50, 52, 63, 113, 154, 177, 334, 336, 

 343, 348, 349, 357, 418, 523 ; Drygalski Fjord; MS 14, 68. 



This species has proved to be more widely distributed in the South Georgia area than 

 was anticipated from the records which were available when it was originally described. 

 It proves to be almost ubiquitous, often common or even very common, the best 

 stations being 126, 144, 149; WS 25, 31-3 and 40. The species is more subject to 

 variation than in the Falklands, the dorsal surface varying from the highly convex 

 trochoid spiral of the original figures to an almost flat dorsal surface. These flat speci- 

 mens can hardly be separated from T. nana. Every intermediate stage of convexity is 

 found and the two forms often occur together, though one or the other is generally 

 dominant. The South Georgia specimens are seldom so ferruginous in colour as the 

 Falkland types, and at many stations the tests are normally grey. Abnormalities are very 

 rare but a few were observed, also a case of encystment at WS 113. The range of the 

 species extends between depths of 26 and 3705 m., but it is most at home in moderate 

 depths below 200 m. and becomes very rare and small in deep water. 



136. Trochammina nana (Brady) (F no). 

 Two stations: 151 ; WS 28. 



A single typical specimen only at each station, 



137. Trochammina bradyi, Robertson (F in). 

 Three stations: 131, 151 ; WS 334. 



Very rare, never more than one or two specimens at each station. 



138. Trochammina nitida, Brady. 



Trochammina niiida, Brady, 1879, etc., RRC, 1881, p. 52; 1884, PC, p. 339, pi. xli, figs. 5, 6. 

 Trochammina nitida. Goes, 1894, ASF, p. 30, pi. vi, figs. 225-30. 

 Trochammitia nitida, Heron-Allen and Earland, 1916, FWS, p. 228, pi. xl, figs. 19-21. 

 Trochammina nitida, Cushman, 1918, etc., FAO, 1920, p. 75, pi. xv, fig. 2. 



Ten stations: 16, 23, 31, 42, 136, 144; WS 43, 46, 50, 349. 



Very rare, but good specimens at most stations, the best at St. 16 and WS 349. 



139. Trochammina turbinata (Brady). 



Haplophragmium turbinatim, Brady, 1879, etc., RRC, 1881, p. 50; 1884, FC, p. 312, pi. xxxv, 

 fig. 9. 



Trochammina turbinata, Eimer and Fickert, 1899, AVF, p. 695; Cushman, 1918, etc., FAO, 

 1920, p. 81, pi. xvii, fig. 2. 



