LITUOLIDAE 85 



Rhumbler made Brady's species the genotype of Nodellum, and I think the separation 

 is justifiable, as it has Httle in common with any other species of Reophax. In all the 

 specimens I have seen the test is chitinous with, in some instances, the addition of suf- 

 ficient ferruginous material to colour the chitin, but without the inclusion of any 

 mineral particles. I doubt whether there are any true internal septa, except between 

 the proloculus and the first chamber, the corrugations of the test giving a false im- 

 pression of septation. 



Genus Hormosina, Brady, 1879 



154. Hormosina globulifera, Brady (F 89) (SG 108). 

 Eight stations: 362, 365, 369; WS 199, 468, 471, 472, 474. 



Rare or very rare everywhere, the best station being St. 369 in 1767 m., where one 

 exceptionally large specimen 5-0 mm. in length, and several smaller, were obtained. At 

 most of the stations only one or two individuals were seen, mostly megalospheric. Good 

 microspheric specimens at St. WS 472. 



155. Hormosina ovicula, Brady (Plate III, fig. i). 



Hormosina ovicula, Brady, 1879, etc., RRC, 1879, p. 61, pi. iv, fig. 6; 1884, FC, p. 327, pi. 



xxxix, figs. 7-9. 



Hormosina ovicula, Goes, 1894, ASF, p. 29, pi. vi, figs. 220-1 ; 1896, DOA, p. 34, pi. iv, figs. 1-2 



(only, not fig. 3). 



Hormosifia ovicula, Cushman, 1910, etc., FNP, 1910, p. 95, fig. 138; 1918, etc., FAO, 1920, 



p. 28, pi. vi, fig. 2. 



Hormosina ovicula, Wiesner, 1931, FDSE, p. 92, pi. xi, figs. 125-6. 



Twenty-seven stations: 170, 175, 177, 181, 182, 362, 363, 365, 369, 373; WS 205, 388, 403, 482, 

 483, 489, 494B, 496, 506, 507A, S07B, 509-12, 514, 515. 



Most of the records depend on fragments consisting of a single chamber only, as the 

 long neck between the chambers is very fragile. Such fragments were common at Sts. 

 WS 496 and 515, where specimens with three chambers were also found; frequent at 

 Sts. 170, 177, 363, WS 510 and 514; rare at the remaining stations. The best specimens 

 were found at Sts. 181 (four chambers) and 182 (five chambers, nearly 7-0 mm. long). 

 There is considerable variety in the shape of the chambers, which are nearly always 

 more slender than in Brady's figures, and sometimes very elongate. The range of depth 

 is from 50 to 4207 m., but it is most frequent in comparatively shallow water. 



156. Hormosina ovicula var. gracilis (Earland) (SG 105) (Plate III, fig. 2). 



} R/ieopliax clistans, Faure-Fremiet, 1913-14, FMAF, 1913, p. 260, fig. i; 1914, p. 2, pi. O, 



fig. 2. 



Reophax distans var. gracilis, Earland, 1933, SG, p. 76, pi. ii, fig. 21. 



Thirty stations: 169, 177, 181, 194, 360, 362, 383, 385; WS 199, 203-5, 377, 383, 385, 386, 395, 

 468, 471, 472, 474, 479, 482, 488, 494A, 496, 503, 507B, 515, 516. 



Comparison with the numerous specimens of H. ovicula, found in the Antarctic 

 material, has convinced me that the little organism figured in the South Georgia report 

 under the name Reophax distans var. gracilis is a Hormosina, and closely related to 

 H. ovicula. There is indeed no apparent distinction except in their comparative sizes, 



