144 DISCOVERY REPORTS 



This species is singularly rare as compared with its abundance in the Falklands area, 

 and to a lesser extent in South Georgia. It is rare or very rare everywhere, except at 

 St. 385 in 3638 m., where it was frequent and presented most of the variations referred 

 to in the previous reports. Both long and short specimens were found at this station 

 as well as the punctate varieties. At the deep-water stations 384, 385 and 386 specimens 

 with rough exterior predominate, but this may be due to decomposition of the surface 

 layer of the test. The finest and largest specimens were found in the South Orkneys, 

 South Shetlands and Bransfield Strait. In the most southerly records at Sts. WS 506 

 and 507B, which are above 70° S, the species is very rare and small but quite typical, 

 thus proving it to be truly cosmopolitan. A single trigonal specimen was found at 

 St. WS 482. At Sts. 170, 386 and WS 468 a variety occurs with more or less strongly 

 developed basal carina, the best development being at St. 386. It appears to be identical 

 with Fissurina ovata, Seguenza (S. 1862, FMMM, p. 62, pi. ii, figs. 9, 10) but does not 

 seem worth varietal separation. Lagena cushmani, Wiesner (see No. 365) (W. 193 1, 

 FDSE, p. 121, pi. xix, fig. 225), seems to be very similar, but perhaps more inflated and 

 with a broader keel. 



315. Lagena bicarinata (Terquem) (F 236) (SG 203). 

 Two stations: 385, 386. 



Several specimens at St. 385, a single one only at St. 386. The stations are in very 

 deep water, outside and just within the Antarctic convergence line. 



316. Lagena bisulcata, Heron-Allen and Earland (F 239) (SG 204). 

 Three stations: 170, 175, 200. 



Large and very typical specimens are not uncommon at St. 170. Very rare but 

 equally good at the other stations. 



317. Lagena botelliformis, Brady (F 173). 

 Four stations: 175, 385, 386; WS 204. 



A single excellent specimen at St. 175, very rare and less typical at the other stations. 



318. Lagena catenulata, Reuss (F 201) (SG 205). 

 Seven stations: 170, 200, 363, 384-6; WS 204. 



Only single specimens except at Sts. 384 and 385 where it is very rare. The best and 

 largest individuals were found in deep water at Sts. 384, 385 and 386. 



319. Lagena chasteri, Millett. 



Lagena chasten', Millett, 1898, etc., FM, 1901, p. 11, pi. i, fig. 11. 



Lagena chasteri, Sidebottom, 1912, etc., LSP, 1912, p. 398, pi. xvi, figs. 31-4; 1913, P- 180. 



Three stations: 386; WS 505, 507 b. 



Very rare at all the stations, but quite typical at St. 386, which is in very deep water 

 in the Drake Strait and outside the Antarctic convergence line. The specimens from 

 Sts. WS 505 and 507B are in closer resemblance to Sidebottom's fig. 32 (ut supra) ; the 

 surface texture being coarser. His description of the structure of the test does not 

 appear to be correct. The shell wall is compound, the inner hyaline shell being covered 



