84 DISCOVERY REPORTS 



original, and so far as I know, the only other record is from the North Pacific, off Japan, 

 191 fathoms. The species is evidently related to R. adiincus, Brady. 



150. Reophax aduncus, Brady (SG 107). 

 Four stations: WS 383, 403, 471, 474. 



Always very rare. The best specimens were found at Sts. WS 403 and 471. All the 

 records are from deep water between 2085 and 3762 m. 



151. Reophax cushmani, Heron- Allen and Earland (F 88). 

 Four stations: 177, 363 ; WS 201, 203. 



A few very good specimens from 329 m. at St. 363 in the South Sandwich Islands, 

 built of black volcanic scoriae. Small specimens are more frequent at St. WS 201 in the 

 Scotia Sea at a depth of 4134 m. At the remaining stations only single specimens were 

 found, that from St. WS 203 being of doubtful identity. 



152. Reophax sabulosus, Brady (SG 106) (Plate IX, figs. 21, 22). 

 Three stations: WS 205, 512, 517. 



A remarkably fine specimen about 6-o mm. in length was found at St. WS 512 in the 

 BeUingshausen Sea, depth 652 m. The characteristic thick outer layer is entirely com- 

 posed of Radiolaria and diatoms, without apparent cement. A fragment consisting of 

 the final chamber and neck found at St. WS 205 in the Scotia Sea, 4207 m., probably 

 belongs to this species, as also fragments from St. WS 517 in the Bellingshausen Sea, 

 2770 m. In these instances the integument is sandy. 



The occurrence of this large species, hitherto, with the exception of a single specimen 

 in South Georgia, recorded only from the " Cold Area " of the Shetland-Faroe Channel, 

 is particularly noteworthy. 



Genus Nodellum, Rhumbler, 1913 



153. Nodellum membranaceum (Brady) (Plate II, fig. 41). 



Reophax membranacea, Brady, 1879, etc., RRC, 1879, p. 53, pi. iv, fig. 9; 1884, FC, p. 297, 



pi. xxxii, figs. 1-4. 



Reophax tnembrafiaceiis, Cushman, 1910, etc., FNP, 1910, p. 90, fig. 126. 



Nodellum membranaceum, Rhumbler, 191 1, etc., FPE, 1913, pp. 443, 473, text-fig. clxviii. 



Reophax membranacea, Pearcey, 1914, SNA, p. 1006. 



Five stations: 360; WS 204, 403, 471, 472. 



Two specimens at each of the Sts. 360, WS 403, 471, 472 and a single specimen 

 at St. WS 204. They are all chitinous and transparent, though some are of a deeper 

 ferruginous tint than the others. The best specimens were found at Sts. WS 471 and 

 472. The depths range between 3264 and 3762 m., the stations being in the deep water 

 of the Scotia Sea and Drake Strait. Pearcey records the species from 1775 fathoms in 

 the Weddell Sea, and it is probably widely distributed in the deep water of all the seas, 

 though specimens are always very rare. 



It may be noted that the organism figured by Millett under the name Reophax mem- 

 branacea (M. 1898, etc., FM, 1899, p. 255, pi. iv, fig. 14) is not Brady's species, but a 

 variety of Reophax scottii, Chaster. 



