4 i6 DISCOVERY REPORTS 



Connecting tubes six, arising near proximal end. 



Avicularia stalked, attached at the level of the operculum, the beak forming more than 

 half the total length, the muscle-chamber strongly humped dorsally. 



Ovicells very shallow, connected with distal zooecium by tube extending whole length 

 of basal surface of erect part of zooecium to meet remote distal connecting tube (Fig. 

 34 A). 



Remarks. Busk distinguished this form from typical Beania magellanica by the single 

 phrase "zooecia widely distant". As can clearly be seen in his figure the difference lies 

 not only in the length of the connecting tubes, but in their origin near the proximal end 

 of an otherwise erect zooecium. In this the variety resembles B. erecta, but its zooecia 

 and avicularia are very much smaller and differ in shape, and I have seen no trace of 

 marginal spines in B. erecta, and no connexion between the ovicell and the distal 

 zooecium. 



Further differences from B. magellanica lie in the small size, straight sides and angular 

 distal end of the zooecia (cf. Fig. 34 B and C) ; in the presence of marginal spines ; and in 

 the short, humped avicularia (cf. Figs. 34 B and 35 G). The only point of special 

 resemblance to B. magellanica is the connexion of the ovicell with the distal zooecium. 

 There is thus no adequate evidence that this form is specially related to either B. magel- 

 lanica or B. erecta, and it seems best to treat it as a distinct species. 



Busk's drawing represents a dried specimen in which the shrivelling of the soft parts 

 has drawn the edges of the opesia together. Levinsen (1909, p. 100) was misled by this 

 when he suggested that a new genus was represented. 



10. Beania erecta Waters. Plate IX, fig. 2; Fig. 35 A, F. 



Beania erecta Waters, 1904, p. 30, pi. i, fig. 8 a-e. 



? Beania erecta Calvet, 1909, p. 13; Kluge, 1914, p. 649, text-fig. 296. 



not Beania erecta Livingstone, 1928, p. 26, pi. v, fig. 4; Hasenbank, 1932, p. 342, text-fig. 15. 



? not Beania erecta Thornely, 1924, p. 7. 



Station distribution. Antarctic: Weddell Quadrant, Sts. 160, 371 ; Victoria Quadrant, Sts. 1648, 

 1651, 1652, 1660. 



Geographical distribution. Shag Rocks; South Sandwich Islands (Discovery); Bellingshausen 

 Sea (Waters); Ross Sea (National Antarctic Expedition; Terra Nova; Discovery). 



The Discovery material of Beania erecta comprises two distinct forms. One appears 

 to agree with typical B. erecta, the other is described below as B. erecta var. livingstonei. 

 Livingstone's figured specimens belonged to this variety, but where no figure of the 

 zooecium (e.g. Kluge, 1914, p. 649) is given it is impossible to tell which form is re- 

 corded, though it is probable that Thornely, working on the same collection as Living- 

 stone, based her record on the variety. 



The ovicell of B. erecta is very shallow and flanked by the distal spines (Fig. 35 A). 

 In frontal view its double edge can be seen. Basally it is oval in outline, the lateral walls 

 continuing the line of the spines and meeting a transverse thickening of the basal wall. 

 There is no tubular continuation such as is found in B. magellanica. 



