74 DISCOVERY REPORTS 



Genus Rhizammina, Brady, 1879 



94. Rhizammina algaeformis, Brady. 



Rhizanmiina algaeforwis, Brady, 1879, etc., RRC, 1879, p. 39, pi. iv, figs. 16, 17; 1884, FC, 



p. 274, pi. xxviii, figs. i-ii. 



Rhizammina algaeformis, Flint, 1899, RFA, p. 272, pi. xv, fig. i. 



Seven stations: 20, 45 ; WS 50, 154, 336, 349; MS 68. 



Fragments doubtfully referable to RMzommhia occur at these stations, but only at 

 MS 68 was a branching fragment seen which could with any certainty be referred to 

 R. algaeformis. The others are flat, unbranching, ribbon-like organisms of variable but 

 regular width throughout, very similar to the figures of "chitinous Rhizopod-tubes^ 

 probably related to Rhizammina'", which Brady figures (B. 1884, FC, pi. xxix, figs. 1-3). 

 They are more or less coated with mud. Diatoms, etc., and their size, though very 

 variable, is nearly always much less than that of R. iudivisa, Brady. They possibly repre- 

 sent one or more species still to be described. At WS 154 a large worrn tube was found 

 festooned with such organisms. 



Family LITUOLIDAE 



Sub-family LITUOLINAE 

 Genus Reophax, Montfort, 1808 



95. Reophax scorpiurus, Montfort (F 82). 



Seventeen stations : 16,20, 131, 136, 140, 144, 151, 157; 53° 00' S, 34° 22' W; WS 28, 66, 334, 351, 

 353> 373. 429. 522. 



Except at WS 334, where it is frequent, this species is uniformly rare, seldom more 

 than one or two specimens at a station. Very good specimens, however, were found at 

 WS 66 and 353. 



96. Reophax subfusiformis, sp.n. (Plate II, figs. 16-19). 



Reophax scorpiurus {pars), Goes, 1894, ASF, p. 25, pi. vi, figs. 166, 167. 



Twenty-six stations: 14, 20, 23, 27, 30, 42, 45, 126, 131, 136, 144, 148, 149, 660; WS 18, 32, 33, 

 37, 42, 43, 45, 46, 154, 348, 349; Drygalski Fjord. 



Test large, usually composed of four chambers only, though specimens have been 

 observed up to six chambers. Chambers increasing rapidly in size, the last one forming 

 the bulk of the entire test, sometimes as much as four-fifths of the whole. The chambers 

 are turgid with sutural lines deeply depressed and are arranged on a more or less 

 strongly curved axis, the apertures being situated near the outer edge of the curve. The 

 final chamber is fusiform and tapering to the apertural end, which carries a prolonged 

 neck with large round aperture. The wall is thin and smoothly finished externally, built 

 of sand grains of varying sizes, often including some very large grains, embedded in 

 cement. Inner surface of wall very rough and irregular. Colour grey to nearly black 



