1867.] DR. J. E. GRAY ON SPONGES. 521 



10. SCHMIDTIA. 



Sponge tuberose, or tuberoso-elongate, more or less pedunculate, 

 single, or two or three coalesced, with a central tube internally hol- 

 low. Parenchyma more or less netted. Spicules of five forms, all 

 smooth: — ]. Thick, needle-shaped. 2. Fusiform. 3. Slender fusi- 

 form, thick. 4. Subcylindrical, curved, blunt. 5. Longer, pointed, 

 angularly bent at the end. 



Schmidtia, Babamo-Crivelli ; O. Schmidt, Suppl. i. p. 42. 



SCHMIDTIA FTCllOllMIS. 



Schmidtia fcifuniiis, S. clavata, et S. dura, Balsamo-Crivelli, 

 Mem. See. Itahana, 18G3, vol. v. ; O. Schmidt, Supp. i. p. 42. 

 Reniera ''.dura, O. Schmidt, i. p. 7&, t. 7. f. 13. B.M. 



1 1 Crella. 



Sponge crustaceons, tubercular ; pores confined in wedge-shaped 

 areas. Spiculesof two kinds:— 1. Fusiform. 2. Club-shaped, nodose. 



Cribrella, O. Schmidt, p. 70 (not Agassiz). 



Crella elegans. 



Cribrella elegans, O. Schmidt, p. 70, t. 7. f. 1. 



12. Sophax. 



Sponge-coating rough ; oscules minute, dispersed. Skin spinu- 

 lose. Spicules: — 1. Needle-like, long, slender, flexuous. 2. Needle- 

 like, minutely spined. 



Sophax fallax. 



Microciona fallax, Bowerb. B. S. ii. p. 128. 



13. Epicles. 



Sponge-coating thin, smooth. Skin pellucid, without spicules. 

 Spicules of two forms : — 1. Needle-like, slender, in widely radiating 

 groups. 2. Subclavate, smooth or covered with minute spines. 



Epicx,es radiatus. 



Hymedesmia radiata, Bowerb. B. S. ii. p. 149. 



14. Eurypon. 



Sponge-coating hispid. Skin spiculated. Spicules of two kinds : — 

 1. Needle-like, long, slender, smooth. 2. Subclavate, spinulated 

 all over. 



Eurypon ceavatum. 



Hymerapkia clavata, Bowerb. B. S. ii. p. 143. 



15. BUBARIS. 



Sponge-coating cavernous, hispid. Skin spiculose. Spicules of two 



