I20 DISCOVERY REPORTS 



Genus Gaudryina, d'Orbigny, 1839 



241. Gaudryina bradyi, Cushman (SG 161). 

 Five stations: 383, 385, 386; WS 400, 469. 



Very rare everywhere; single specimens only except at St. 383, where several very 

 large but thin- walled examples were found. All the stations are in the deep water of the 

 Drake Strait, 3638-4773 m. 



241 A. Gaudryina flintii, Cushman (SG 162). 

 One station: WS 505. 



Frequent at St. WS 505 in the extreme south of the Bellingshausen Sea, off the ice 

 barrier, depth 1500 m., where the specimens were large and well developed. It was not 

 seen at any other station. 



242. Gaudryina deformis, sp.n. (SG 163) (Plate V, figs. 37-40). 

 Seven stations: 383-5 ; WS 204, 403, 468, 469. 



Test very irregular in outline, bluntly rounded at the apical end, which consists of 

 about two or three sets of chambers arranged on a triserial plan. The biserial portion 

 following consists of two or occasionally three pairs of chambers, often very ill-matched, 

 so that the test becomes irregularly curved. Sutures vary from flush and almost in- 

 visible to deeply excavated. Chambers more or less inflated, the last pair usually 

 abruptly truncated. Aperture small with a raised border. Shell wall thin, composed of 

 very fine mineral grains without visible cement, smooth but not polished, fragile. 



Length up to 0-90 mm.; greatest breadth at final chamber about 0-50 mm. 



Not infrequent at Sts. 384 and WS 469, rare elsewhere. The test is apparently very 

 fragile, as most specimens were more or less damaged. The early triserial portion is more 

 frequently met with than adult shells, and only young individuals were found at Sts. 

 WS 204 and 468. The young specimens might easily be mistaken for a Verneiiilina. 



This is a deep-water species, the records ranging between 3328 and 4344 m. It evi- 

 dently belongs to the group of Gaudryina haccata, Schwager, and in some respects is 

 suggestive of G. iiva, Schwager (S. 1866, FKN, p. 201, pi. iv, figs. 13 a, b), generally 

 regarded as a synonym of G. haccata. But it is altogether more irregular in its con- 

 struction, in fact hardly any two specimens are alike. 



I have again examined the single specimen which I recorded in the South Georgia 

 report as G. haccata (SG 163). It is unquestionably G. deformis, and the report should 

 be amended. 



243. Gaudryina apicularis, Cushman (SG 164) (Plate V, figs. 35, 36). 

 Eight stations: 360, 362; WS 199, 203, 205, 469, 471, 472. 



Rare or very rare everywhere, but many excellent specimens were found at Sts. 362, 

 WS 471 and 472. All the stations are in the deep water of the Scotia Sea, between 3264 

 and 4259 m. It is a very widely distributed species, found in deep water in all the 

 oceans, but does not appear to have established itself in the higher latitudes. 



