1867.] dr. j. e. gray on sponges. 513 



5. Tragosia. 



Sponge funnel-shaped or fan-shaped, branches anastomosing, mi- 

 nutely hispid. Skeleton regularly netted. 



"The spicula of the primary lines of the skeleton are needle- 

 shaped, with their apices directed inwards ; those of the secondary 

 lines are fusiform." 



Isodictija, sp., Bowerb. B. S. ii. p. 318. 



Halichondria* *, Johnst. = Traffos, Schweiger, Handb. p. 422. 



* Sponge funnel-shaped, or rarely fan-shaped. 



1. Tragosia infundibuliformis. B.M. 



Spongia infundibuliformis, Linn. S. N. p. 1296 ; Esper, Z. t. 57. 

 f. 1, 2. 



S. crateriformis, Pallas. 



S. calyciformis, Lamk. 



<S. pociUum, Lamx. 



Halichondria infundibuliformis, Flem. B. A, p. 524 ; Johnston, 

 B. S. p. 105, t. 6."f. 3. 



Isodictya infundibuliformis, Bowerb. B. S. ii. p. 317, f. 9. 



** Sponge branched and anastomosing in some places. 



2. Tragosia dissimilis. B.M. 

 Isodictya dissimilis, Bowerb. B. S. ii. p. 318, 



6. Clathria. 



Sponge branched; branches inosculating. Spicules uniform, needle- 

 like, smooth, united in a horny matter. 

 Grantia, Nardo. 

 Clathria, O. Schmidt, 57. 



1. Clathria compressa, 0. Schmidt, p. 58, t. G. f. 1 (spicules). 

 Spongia clathrus, ^s\^er1 B.M. 



2. Clathria coralloides, O. Schmidt, p. 58, t. 5. f. 10, II. 



Grantia coralloides, Nardo. 



Spongia coralloides, Esper? B.M. 



7. AxiNELLA, O. Schmidt, p. GO. 



Sponge tree-like, branched, flexible, and rather elastic. Spicules 

 cylindrical, long, often bent or arched, some acute, others blunt at 

 the end. 



Grantia, sp., Nardo. 



1. AxiNELLA ciNNAMOMEA, O. Schmidt, p. 61, t. 6. f. 2. 

 Grantia cinnamomea, Nardo. 



S[)icules fusiform and needle-shaped, curved. B.M. 



Proc. Zool. Soc— 1867, No. XXXIII. 



