492 " THETIS " SCIENTIFIC RESULTS. 



The species of the following Sub-family previously described 

 are : — 



Phitnolialichondria australis, Lendf. 

 Glathria lendenfeldi, R. & D. 

 ,, inancliorata, R. & D. 



McJiinoclatliria macropora, Lendf. 

 Ecliinochalina glabra, R. & D. 

 Phakellia jaeksoniaoia, Dendy. 

 Axinella arhorescens, R. & D. 



Subfamily ECTYONIN^, Carter. 



PLUMOHALIOHONDRIA, Carter. 



PLUMOHALICHONDRIA AUSTRALIS, Lendeiifeld, sp. 



ClatJiria atisfralis, Lendenfeld, Austr. Mus. Cat., xiii., Sponges, 



1888, p. 222. 

 Glathria macropora^ Lendenfeld, loc. cit., p. 22L 

 Uchinonema Icevis, Lendenfeld, loc. cit., p. 220. 

 Plumohalichondria rtz«s;^rfl//"s,Whitelegge, Rec. Austr. Mus., iv., 2, 



1901, p. 90. 



Station 50. 



Two much worn examples of this species were obtained off 

 Shoalhaven Bight in 15-18 fathoms. 



The specimens are infested with barnacles and exhibit numer- 

 ous perforations made by the boring Isopod Cymodoce. 



STYLOSTICHON, Topsent. 



STYLOSTICHON CONULOSUM, sp. nov. 



(Plate xlv., figs. 21, 30.) 



Station 44. 



Sponge incrusting, growing ontheaxis of a gorgonoid; it measures 

 about 80 mm. in length, 7 mm. in its shorter and 12 mm. in its 

 longer diameter The surface exhibits innumerable conuli, which 

 are often compressed at the tips and bear here and there a series 

 of minute nodules ; the latter as well as the conuli are finely 

 hispid, with projecting spicules. The rest of the surface pre- 

 sents a somewhat honeycombed aspect, with a few scattered 

 circular oscula, and small, smooth, porous, depressed, epidermal 

 areas. Texture elastic and rather tough ; colour greyish brown. 



Skeleton consisting of a series of plumose columns from O'S to 

 0-5 mm. in diameter. They give off lateral branches at irregular 



