266 DISCOVERY REPORTS 



holotype in skeleton, colour, texture and appearance of the surface, are irregularly 

 pyriform with large oscules (Plate LI, figs, i, 2). 

 Distribution. Punta Arenas and Juan Fernandez. 



Haliclona penicillata (Topsent). 



Reniera pefiicillata, Topsent, 1908, p. 20, pi. ii, figs. 2, 3, pi. v, fig. 14; Chalina penicillata. 

 Burton, 1929, p. 420. 

 Occurrence. St. 181 : Palmer Archipelago, 160-335 m.; St. WS 108: Falkland Islands, 1 18-120 m. 



Remarks. The two specimens agree closely with the holotype except that in one of 

 them the oxea are mostly centrotylote and a few are modified to styli. 



Dlstribution. Graham Land; Victoria Land. 



Haliclona gaussiana (Hentschel). 



Siphonochalina gaussiana, Hentschel, 1914, p. 136, pi. iv, fig. 17, pi. viii, fig. 17. 

 Occurrence. St. 42: South Georgia, 120-204 m. 



Remarks. The present specimen differs from the holotype only in the absence of 

 polyspicular fibres and in the dimensions of the spicules. These are: oxea 0-15 mm. 

 long, and toxa not exceeding 0-04 mm. in length. 



The skeleton is a unispicular (renieroid) network with triangular mesh, and the outer- 

 most spicules hispidate the surface. There is no special dermal skeleton. The species is 

 therefore a typical Haliclona. 



Distribution. Wilhelm Land. 



Haliclona tubuloramosa (Dendy). 



Gellius tubuloramosus, Dendy, 1924, p. 323. 



Occurrence. St WS 243 : Falkland Islands, 144-141 m. 



Remarks. A solitary example of this species is present. I have made a specially 

 careful comparison with the holotype, since species common to the Falklands and to 

 New Zealand are of rare occurrence. 



Distribution. New Zealand. 



Haliclona conica (Br0ndsted). 



Pachychalina conica, Brondsted, 1924, p. 454, fig. 12. 



Occurrence. St. WS 243 : Falkland Islands, 144-141 m. 



Remarks. Through the kindness of Dr Br0ndsted I have been able to compare this 

 specimen with the holotype and find an exact agreement in every way. 



Distribution. New Zealand. 

 Haliclona bilamellata, sp.n. (Plate XLVIII, figs. 5-9; Plate XLIX, figs. 1-3; Plate L, 

 fig. 2; Fig. 6). 



Holotype. B.M. 28. 2. 15. 121. 



