1867.] DR. J. E. GRAY ON SPONGES. 557 



1. Leucogypsia gossei, Bowerb. ib. ii. p. 12. 

 Hab. South coast of England. 



2. Leucogypsia algoensis, Bowerb. ib. ii. p. 166, t. 26. f. 345, 

 350 (spicnla). 



Hab. Algoa Bay, 



7. Clathrina, 



Sponge branched ; branches slightly compressed, variously and 

 irregularly anastomosing. Oscules at the end of the smaller branches. 

 Spicules triradiate, rays blunt. 



Clathrina sulphurea. B.M. 



Grantia clathrus, 0. Schmidt, S. A. Supp. i. p. 24, t. 3. f. 3. 



8. Lelapia. 



Sponge ? Spicules calcareous, elongate, fusiform, with two 



more or less elongated nearly parallel branches at one end. 



Lelapia australis. 



A new calcareous sponge, Bowerb. B. S. i. f. 237. 

 Hab. West Australia, Freemantle. 



Fam. 2. Alcyoncellid^e. 



Sponge tubular, simple or branched. Outer surface tessellated, 

 formed of square perforated cells. Oscules terminal. 



1. Alcyoncellum. 



Sponge soft, subgelatinous, slightly branched. 



Alcyoncellum et Alcyoncella, Blainville, Man. d'Actin. p. 529, 

 1832 (not Milne-Edwards, 1835; Bowerbank, nor Owen, Nardo, 

 nor O. Schmidt). 



Alcyoncellum gelatinosum, Blainv. Man. d'Actin. p. 529, 

 t. 92. f. 5. 



Hab. . B.M.? 



2. DuNSTERViLLiA, Bowcrb. ; O. Schmidt, S. Ad. p. 6. 



Sponge tubular, fusiform or globose, hispid. Surface even, tessel- 

 lated. Oscules single, terminal, surrounded with two series of cilia — ■ 

 one vertical, and the other expanded horizontally. Spicules of ske- 

 leton three-rayed, rays equal ; of fringe rigid, fusiform. 



1. DUNSTERVILLIA TESSELLATA. 



Grantia tessellata, Bowerb. B. S. i. pp. 29, 275, t. 4. f. 86, 286, 

 ii. p. 26. 



"With the internal defensive spicules (clavate) curved towards 

 the mouth of the cloaca. 



