58 DISCOVERY REPORTS 



The specimens are attributed with some hesitation to B. capiUare, as they appear to 

 agree better with de FoHn's figure and description than with any other species. At the 

 same time there appears to be Httle difference between this species and B. filiformis 

 except size, and the duller surface of the tube. 



52. Bathysiphon rufescens, Cushman (Plate I, fig. 25). 



Bathysiphon rufescens, Cushman, 1917, NFP, p. 651 ; 1921, FP, p. 43, pi. ii, fig. 3. 

 Three stations: 30, 45; MS 14. 



Fragments only, the best at St. 45. In spite of their small size, the largest fragment 

 being only 2-15 mm. in length, they appear to agree generally with Cushman's species, 

 which attains a length of 15 mm. in deep water off the Philippines. 



Cushman describes his species as very slightly curved or tapering, slender, the wall 

 marked by annular rings, surface rough, very light yellowish or reddish brown, dull, 

 differing from B. nifum in the rough granular surface and straight test. 



The South Georgian specimens have these characters. They are rusty brown in colour. 



53. Bathysiphon rufum, de Folin. 



Bathysiphon rufum, de Folin, 1887, B, p. 283, pi. vi, figs. 8 a-c. 



Bathysiphon rufus, Cushman, 1918, etc., FAO, 1918, p. 29; 1921, FP, p. 42, pi. ii, fig. 2. 



Two stations: 53° 00' S, 34° 22' W; WS 336. 



A single specimen at each station. That from WS 336 is a small curved individual 

 regularly tapering to a point and marked by many superficial constrictions. At the other 

 station only a fragment of a large specimen was found. Both are of a yellowish colour, 

 in which feature they would agree better with B. flavidwn, de Folin ; but that species is 

 stated to be sub-cyhndrical and only very slightly tapering. There is, however, con- 

 siderable range in the colour of B. nifum within our experience, and so I assign the 

 South Georgian specimens to that species. There appears to be some likelihood that de 

 Folin's two species are really identical, his figure of B. flavidiim does not suggest a 

 perfect specimen. 



Sub-family SACCAMMININAE 



Genus Sorosphaera, Brady, 1879 



54. Sorosphaera confusa, Brady. 



Sorosphaera confusa, Brady, 1879, etc., RRC, 1879, p. 28, pi. iv, figs. 18, 19; 1884, FC, p. 251, 



pi. xviii, figs. 9, ID. 



Sorosphaera confusa, Rhumbler, 1903, ZRR, p. 235, fig. 63. 



Sorosphaera confusa, Cushman, 1918, etc., FAO, 1918, p. 39, pi. xv, figs. 4, 5. 



Three stations: 144; WS 33, 154. 



Extremely rare. One excellent free specimen at St. 144 and a good sessile one at 

 WS 154. A very doubtful specimen at WS 33. 



