CHONDBILLA. / i 



known in Geodia and some other sponges. No other species of Chondrilla 

 possesses a cortex. 



Geogkaphicax Disteibution. — East coast of Australia : Port Jackson, 

 N. S. W. (Lendenfeld). 



Chondrilla australiensis, Carter. 



Chondrilla australiensis, H. J. Carter, " On two New Species of Gumrainese," 

 Annals and Magazine of Natural History, ser. 4, vol. xii. p. 23 (1873). 



Chondrilla australiensis, E. von Lendenfeld, " A Monograph of the Australian 

 Sponges, Part IV. — II. Ordo Myxospongia, Haeckel" Proceedings of the 

 Linnean Society of New South "Wales, vol. x. part 1, p. 153 (1885). 



Incrusting or self-supporting and spreading horizontally, flat, cake-shaped ; 

 of a dirty yellow or buff colour. Surface smooth, glistening ; consistence 

 pretty elastic, tolerably tough. Oscula numerous, small, of different sizes, 

 in groups, or terminal on the lobes. Cortex translucent. Spicules of two 

 kinds : — (1) "With short, sharp, conic spines, taking up the whole surface of 

 the sphere. (2) "With slender, sometimes terminally bifid or trifid serrated 

 spines. These two kinds of spicules are most numerous towards the outer 

 surface ; the short-spined spicules measure 0-026 millim., the others 0-022 

 millim. 



GrEOGEAPHiCAL DiSTEiBUTiON. — South coast of Australia : Port Phillip, V. 

 {Carter). East coast of Australia : Port Jackson, N. S. W. {Lendenfeld,). 



Chondrilla pap lata, Lendenfeld. 



Chondrilla papillata, E. von Lendenfeld, " A Monograph of the Australian 

 Sponges, Part IV. — Ordo II. Myxospongia, Haecl-el,'' Proceedings of the 

 Linnean Society of New South Wales, vol. x. part 1, p. 153 (1885). 



This species is characterized by a very peculiar roughness of the surface. 

 The sponge is lobose or massive, not lamellar or globose, as many other 

 species. It appears somewhat like a horny sponge, in consequence of its 

 erect shape and the papillae on its surface. It consists of a central mass, 

 from which cylindrical or slightly flattened processes grow up. The whole 

 sponge attains a maximum diameter of 60 millim. (height). The processes 

 measure 10-14 millim. in breadth. The oscula are situated terminally on 

 the processes ; they are circular and have a diameter of about 2 millim. ; 

 they are not surrounded by chimneys. The whole surface is rendered very 



