64 DISCOVERY REPORTS 



Genus Saccammina, M. Sars, 1868 



83. Saccammina sphaerica, M. Sars (SG 60). 



Twelve stations: 167, 170, 175, 366, 373, 386; WS 199, 201, 400, 471, 474, 482. 



Generally rare but frequent at St. 167 in shallow water (344 m.) in the South Orkneys, 

 where the specimens are small. It is also frequent at St. WS 201 in the Scotia Sea 

 (4134 m.), but here the specimens are large. Depth, however, does not govern the size 

 as some of the largest specimens of all, quite 3-0 mm. in diameter, were found at 

 St. WS 482 (50 m.) in the Bransfield Strait. A single specimen found at St. 366 in the 

 South Sandwich Islands is black, the test being loosely constructed of scoriae. A sessile 

 specimen was found at St. WS 471, with the normal type. At St. WS 199 in the Scotia 

 Sea (3813 m.), in company with specimens of normal size, a fragment nearly 5-0 mm. in 

 diameter and a double specimen 6-o mm. in length were found. They are roughly built, 

 incorporating very large sand grains. 



84. Saccammina minuta, Rhumbler (SG 61). 

 Five stations: 171 ; WS 469, 472, 494 A, 516. 



Confined to deep water in the Scotia Sea, Bransfield Strait and Bellingshausen Sea, 

 and always very rare. The best specimens were found at Sts. WS 472 and 516. Except 

 for its comparatively minute size there seems to be little reason for separating this as a 

 species from S. sphaerica, but it is noteworthy that the two forms do not occur together 

 at any station. 



Genus Proteonina, Williamson, 1858 



85. Proteonina difflugiformis (Brady) (F 61) (SG 62). 



Seventy-five stations: 169, 170, 171, 175, 177, 180-2, 186, 187, 191, 194, 196-8, 204, 206, 360, 

 362, 363, 365, 366, 373, 382, 384-6; WS 199, 203, 204, 377, 382, 383, 385-7, 389, 393-6, 399, 400, 

 403, 468, 471, 472, 474, 476, 479-83, 485-7, 489, 494A, 496, 497, 502, 503, 507B, 509-15, 517, 552, 



553. 555- 



Almost universally distributed in all areas and at all depths. It is common at Sts. 169, 

 181, 186, WS 199, 395, 552, 553 ; frequent at Sts. 175, 180, 362, WS 383, 385, 471, 472, 

 479, 480, 512, 517; more or less rare at the remaining stations. There is great variety in 

 the size and method of construction. The most abundant form is a coarsely built 

 organism, pear-shaped and without produced neck, similar to Brady's fig. 5 (B. 1884, 

 FC, pi. XXX, fig. 5). This is ascribed by Cushman (C. 1910, etc., FNP, 1910, p. 42) 

 and Thalmann (T. 1932, NCE, p. 299) to Berthelin's Haplophragmium (= Proteonina) 

 lagenariiim (B. 1880, FAM, p. 21, pi. i, fig. 2), but on what grounds is not clear. 

 Berthelin's organism is only about one-quarter of the size of Brady's, and has an aper- 

 ture half the width of its test. This coarsely built form occurs in various sizes, and is 

 very large and roughly built at the series of Sts. 180-191 and WS 395. It is impossible 

 to avoid the suspicion that many of the specimens, both small and large, are primordials 

 of Reophax scorpiurus or R. pilidifer, whenever the two genera occur together. 



The neatly agglutinate tests similar to Brady's figs. 1-3 (B. 1884, FC, pi. xxx) are less 

 frequent but widely distributed. They exhibit an even greater range of variation than 

 is shown in Brady's figures. At St. WS 471, and occasionally elsewhere, heavy mineral 



