ASTRORHIZIDAE 6i 



Pelosphaera is no doubt closely allied to Psammospliaera, but even without its t}-pical 

 processes would be distinguishable by its relatively enormous size and the friable nature 

 of the external cement. 



59. Pelosphaera cornuta, Heron-Allen and Earland (Plate VII, figs. 24-7). 



Pelosphaera cornuta, Heron-Allen and Earland, 1929, etc., FSA, 1932, p. 255, pi. ii, figs. 12-15. 

 Five stations: 17, 27, 126, 144, 148. 



The characteristic features of the genotype have been given under the description of 

 the genus. The best specimens, both large and small, were obtained at Sts. 126, 144 and 

 148, where the material was obtained from nets attached to the trawl, and the specimens 

 had been subjected to less friction than at St. 27. At this station, dredged material had 

 been passed through sieves with the result that few specimens retained the character- 

 istic processes. It is of frequent occurrence at Sts. 27, 126 and 148 — rare elsewhere. 

 At St. 17 the only specimen found is abnormal, both in size and shape. It is roughly 

 triangular in outline, about 6-o mm. in greatest diameter, and constructed of relatively 

 enormous sand grains. A specimen from St. 148, which was laid open, contained a large, 

 orange-coloured sphere almost filling the central cavity, which is probably the proto- 

 plasmic body in a chitinous envelope. Similar enclosures have been found in Pelosina. 



Dimensions range between 3-0 and 5-0 mm. in diameter. 



Genus Saccammina, M. Sars, 1868 



60. Saccammina sphaerica, M. Sars. 



Saccammina sphaerica, M. Sars, 1868, LUHD, p. 248. 



Saccammina sphaerica, Brady, 1884, FC, p. 253, pi. xviii, figs. 11-17. 



Saccammina sphaerica, Heron-Allen and Earland, 1912, etc., NSG, 1913, p. 1, pi. i and pi. ii, 



figs. I, 2. 



One station: 151. 



A single rather small specimen. 



61. Saccammina minuta, Rhumbler. 



Saccammina minuta, Rhumbler, 1909, etc., FPE, 1913, p. 375, pi. i, figs. 8, 9. 

 Two stations: WS 343, 349. 

 Very rare, never more than one or two specimens at a station. 



Genus Proteonina, Williamson, 1858 



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



Twenty stations: 13, 30, 42, 131, 136, 144, 151; 53° 00' S, 34° 22' W; WS 33, 42, 48, 334, 336, 

 343> 349. 353. 428, 429. 522, 523- 



Frequent at WS 429, but rare or very rare elsewhere. Considerable variation in 

 construction is exhibited by specimens from diflFerent stations, but the most common 

 form is a long oval flask of quartz grains showing no attempt at neatness of construction, 



5-2 



