32 Proceedings of the Royal Society of Victoria. 



Clatiiria fyfica, Carter, sp. 



Echinont'Dia typiciim, Carter, A.M.N.H., May, 1881, p. 378. 



Echino/ieinn anchoratuin, Carter, A.IM.N.H., May, 1881, p. 379. 



Echiiioueiiia flabelliforinis, Carter, A.M.N. H., November, 1885, 

 p. 352. 



Echinonenia pecfinifor/nis, Cartel', A.M.N. H., November, 1885, 

 p. 353. 



Phakellia ventilabriDii^ var. aiistniliciisis, Carter, A.M.N.H., 

 November, 1886, p. 379. 



This very couunoii and variable species ranj^es from digitate 

 to flabellate in shape. It is characterised by the stout, echinated, 

 horny fibre and dermal crust of small styli. The megascleres 

 are smooth styli, long and slender in and between the fibres, 

 shorter at the surface, and short spined echinating styli. The 

 microscleres are minute isochelaj, and very slender, hair-like 

 toxa, often in bundles (toxodragmata). The latter, although not 

 mentioned by Cai^ter, are present in B.M. d. 9G and B.M. sp. 48. 

 R.N. 383, 436 and 551 are distinguished from the majority of 

 the specimens by the absence (apparently) of toxa and the more 

 strongly-developed megascleres, but such differences are hardly of 

 specific importance in the genus Clatiiria. 



R.N. 359 (s. 15, 3 f; "dull dirty brick red"); 431 (x, 19 f ; 

 "salmon colour"); 438 (s. 14, 11 f ; " vinaceous-rufous ") ; 677 

 (s. 5; "scarlet"); 797 (s. 9); 840 (s. 10); 900 (s. 10); -959 

 (s. 6) ; 1072 (x A). 



Variety 383; 436 (x, 19 f; "brick red"); 551 (x, 19 f ; 

 subdued crimson). 



B.M. sp. 48 {'■'■ Echinone/na pectiniforiuis, C. type," Heg. 

 86-12-15-141) ; d. So {^^ Phakellia ventilabrum., var. australiensis,'' 

 Re". 86-12-15-422); d. 96 {'■'■ Echinoiic/iia aHchoratii/ii,'' Reg. 

 86-12-15-423). 



Clathria aiigulifera, n.sj). 



Sponge thinly lamellar, very proliferous, anastomosing, low- 

 oTOwing, spreading; vents small, scattered and marginal. Surface 

 glabrous. Texture compressible, resilient, fairly tough. Colour 

 in spirit, very pale yellow. 



Skeleton., an irregular but well-defined and rather close-meshed 

 network of rather slender iibre. The filn-e is composed of very 



