156 DISCOVERY REPORTS 



Several specimens at St. 170, and a single individual at St. 385. The variety is charac- 

 terized by the keel, which is broadest at the base and gradually diminishes towards the 

 produced and solid oral end. It is very similar to L. marginata var.Jissa, which also 

 occurs at St. 170, but the keel is continuous at the base, and not split as in var.Jissa. 



The specimen from St. 385 is not typical, the keel ending abruptly at less than half 

 the length of the shell. 



366. Lagena marginata var. fissa, Heron-Allen and Earland. 



Lagena marginata yat. fissa, Heron-Allen and Earland, 1922, TN, p. 157, pi. v, figs. 24-5. 

 Lagena {Entosolenia) marginata war. fissa, Wiesner, 1931, FDSE, p. 121, pi. xix, fig. 226. 



Two stations: 170; WS 482. 



This curious variety, "in which the keel, rapidly increasing in breadth over the basal 

 quadrant of the shell, is deflected just before reaching the aboral extremity and as 

 rapidly decreases in breadth and vanishes, with the result that the extreme aboral end 

 of the shell shows two keels somewhat widely separated", occurs only at Sts. 170 and 

 WS 482, where it is well developed and not uncommon. 



It was originally described from the Ross Sea, and has recently been recorded and 

 figured by Wiesner from off Kaiser Wilhelm's Land. Its occurrence in the opposite 

 sector of the Antarctic indicates a circumpolar distribution. 



367. Lagena marginata var. homunculus, Sidebottom. 



Lagena tnarginata, var.n. homunctilus, Sidebottom, 1912, etc., LSP, 1912, p. 409, pi. xviii, fig. 15. 



One station: 385. 



A single specimen from 3638 m. in the Drake Strait which is probably referable to 

 Sidebottom 's curious variety, although it is weakly developed as regards the basal spines 

 — the " feet " of the " little man" — which are inconspicuous. The aboral half of the test 

 is rough. 



368. Lagena marginata var. quadricarinata, Sidebottom (SG 233). 

 One station: WS 505. 



Two remarkably fine specimens resembling those from South Georgia in the absence 

 of basal spines, but with typical development of the carinae. 



369. Lagena marginata var. semimarginata, Reuss (F 222). 

 Five stations: 170, 175, 385, 386; WS 482. 



Only a few specimens at each station, very good and typical at Sts. 170 and WS 482. 



370. Lagena marginata var. spinifera, var.n. (Plate VII, figs. 3, 4). 

 Lagena acuta, Brady {11071 Reuss), 1884, PC, p. 474, pi. lix, fig. 6. 



Lagena sacculiis, Cushman (non Fornasini), 1910, etc., FNP, 1913, p. 8, pi. iii, figs. 1-3. 

 Lagena marginata, Sidebottom, 1912, etc., LSP, 1912, p. 407, pi. xviii, figs. 4, 5; 1913, p. 187. 



Five stations : 384-6 ; WS 468, 469. 



Test compressed, lenticular, furnished with a narrow carina extending into the 

 produced neck, and with a basal spine. 



Single specimens except at St. 385 where it is more frequent. All the stations are 

 in very deep water. 



