TETRAXONIDA 325 



Axociella flabellata (Topsent). 



Ophlitaspongia flahellatci, Topsent, 1916, p. 167; id., 1917, p. 41, pi. i, fig. 4, pi. vi, fig. 2; 

 Axociella flabellata. Burton, 1929, p. 433. 



Occurrence. St. 140: South Georgia, 122-136 m.; St. 149: South Georgia, 200-234 m. 

 Distribution. Graham Land ; Victoria Land. 



Genus Pseudanchinoe, Burton 

 Pseudanchinoe toxifera (Topsent). 



Stylostichon toxiferum, Topsent, 1913, p. 621, pi. iv, fig. 7, pi. vi, fig. 14; Anchime toxifertim, 

 subsp. antarctica, id., 1917, p. 43, pi. iv, fig. 5, pi. vi, fig. 5; Pseudanchinoe toxiferum. Burton, 

 1929, p. 434. 



Occurrence. St. 160: Shag Rocks, 177 m.; St. WS 237: Falkland Islands, 150-256 m. 

 Distribution. Graham Land ; Victoria Land ; Gough Island. 



Genus Eurypon, Gray 

 Eurypon miniaceum, Thiele. 



E. miniaceum, Thiele, 1905, p. 446, fig. 64; Raspailia irregularis, Hentschel, 1914, p. 121, 

 pi. viii, fig. 6. 



Occurrence. St. 91 : False Bay, South Africa, 35 m. ; St. 156: South Georgia, 200-236 m. ; St. 190: 

 Palmer Archipelago, 93-130 m. 



Remarks. In external form, the two Antarctic specimens in the present collection are 

 practically identical and are similar to Raspailia irregularis ; but so far as the spiculation 

 is concerned the first is almost indistinguishable from R. irregularis and the second from 

 Eurypon miniaceum. The chief difference in spiculation between these two specimens is 

 that the " eigenthiimliche Acanthostyle " is absent in the one and present in the other, 

 although when present this spicule is not quite typical, since the base is tylote or subtylo- 

 stylote instead of stylote. Since the main difference between Raspailia irregularis and 

 Eurypon miniaceum consists in the absence and presence respectively of this curious 

 spicule, it seems almost certain in the light of the present observations that the two are 

 identical. It appears probable that, in addition to its being of variable occurrence, the 

 spicule is variable in form. 



It is most surprising that a specimen of this species should have been found at 

 False Bay, South Africa. This specimen is sub-spherical, with no visible point of 

 attachment, and the surface is uneven, conulose and minutely hispid. The oscules and 

 pores are probably situated in certain deep but irregular depressions found on the surface 

 of the sponge. The spiculation appears to be typical except that all spicules are slightly 

 smaller than those of the holotype and the " eigenthiimliche Acanthostyle " is not to be 

 found. 



Distribution. Calbuco, Chile. 



