8o DISCOVERY REPORTS 



Cushman has separated the broad and few-chambered form from the long series of 

 R. scorpiiirus figured by Goes, as the type of a species R. curtus. It appears to be fairly 

 characteristic and is the dominant type in the North Sea ; it is not necessarily confined 

 to moderate depths as Cushman states. 



Records have been kept of its occurrence at ten stations, seven of which are under 

 looo m., but the remaining three extend from 1500 to 4773 m. It is frequent at Sts. 

 186 and WS 474, rare elsewhere. The few specimens found at St. WS 485 are rough and 

 built of volcanic sand. At St. 175 very large specimens were roughly constructed of 

 quartz grains. 



135. Reophax subfusiformis, Earland (SG 96). 



Forty-two stations : 167, 171, 171^, 177, 180, 181, 185, 186, 192, 196, 198, 203, 362, 363, 365, 377; 

 62°57'S, 60° 20' 30" W; 64°56'S, 64°43'W; WS 377, 383, 384, 386, 393, 395, ^oo, 403, 480, 

 482, 483, 485-8, 493, 494A, 494B, 496, 509-11, 515, 517. 



Generally distributed in all areas, and at all depths down to 4517 m. The species is 

 nowhere so common or so well developed as in South Georgia, being rare or very rare 

 at most stations. The only stations where it occurs with any frequency are Sts. 186, 363, 

 62° 57' S, 60° 20' 30" W, WS 383, 384, 480, 486 and 510. The best specimens were 

 found at Sts. WS 393, 480 and 486. 



136. Reophax bilocularis, Flint. 



Reophax bilocularis, Flint, 1899, RFA, p. 273, pi. xvii, fig. 2. 



Reophax bilocularis, Cushman, 1918, etc., FAO, 1920, p. 10, pi. ill, figs. 3, 4. 



Four stations: 167, 386; WS 468, 482. 



Very rare at all the stations. Flint's type is built of Globigerina ooze; the Discovery 



specimens are all constructed of mineral grains. 



137. Reophax pilulifer, Brady (F 82 a) (SG 97) (Plate II, figs. 10, 36). 



Forty-one stations: 167, 170, 171, 175, 177, 180-2, 186, 191, 194, 196, 202, 203, 362, 365, 369; 

 62° 57' S, 60° 20' 30" W; WS 201, 203, 382, 394, 403, 472, 475, 480-5, 487, 493, 494A, 494B, 495, 

 502. 503. 514. 552, 553- 



Widely distributed in all the areas and at all depths down to 5029 m. It is most 

 abundant at stations of moderate depth in the Bransfield Strait and Palmer Archipelago, 

 notably Sts. 175, 181, 182, 186 and WS 482, at all of which it is common or very common 

 and of very large dimensions, in some instances reaching a length of 5 mm. It occurs 

 frequently at Sts. 170, 194, 196, WS 394, 487 and 494 a; rare or very rare at the re- 

 maining stations. At most stations the specimens are of rough construction with large 

 projecting mineral grains, similar to the figures of R. robustus, Pearcey (P. 1914, SNA, 

 p. 1006, pi. i, figs. 6-10), but diff'ering in the absence of the produced neck. It would 

 appear probable that Pearcey's species should be transferred to the genus Hormosina. 

 It is noteworthy that no specimens resembling Pearcey's species in the produced neck 

 were found in material from the Antarctic. On the other hand, the specimen recorded 

 from South Georgia (SG 98) is undoubtedly R. robustus. Smoothly constructed speci- 

 mens predominate at some stations, notably Sts. 170, WS 403, 487 and 495. At St. 182 



