208 PROCEEDINGS OP THE ACADEMY OP [1884. 



No. 40. Suberites? sp. Irregularly branched, interuniting, 



ending in round-topped processes. Consistence compact. Color 

 reddish yellow. Spicule of one form onl^', viz., pin-like ; head 

 globular with posterior projection, tricuspid like in profile. 

 (? Suberites marsa, Sdt., Sp. Adriat. Meeres, p. 6*1, taf. T, fig. 2.) 



12. Laxa. 



No. 20. Halichondria sanguinea, Bk. (Mon., vol. iii, pi. 32, 



fig. 5). 



Fam. 13. DONATINA. 



No. 47. Tethya lyncurium^Ws.. (pi. 15, fig. 17, op. cit.). Robust 



form with large cavernous excavations on the surface, and bundles 



of spicules sunk in the dry, dark, chondroid tissue. 



Fam. 14. GEODINA. 

 No. 21. Geodia tuberculosa, Bk. (Proc. Zool. Soc, 1872, p. 676, 

 pi. 46). 



No. 50. The same. Cylindrical fragment. 



Ord. YIII. CALCAREA. 



No. 9. Ascaltis Lamarckii, Haeckel (Die Kalkschwarame, vol. 2, 

 p. 60, Atlas, taf. 9, fig. 5). Massive, growing among sand and 

 round the stems of sea-weed. Enveloping sand. {Clathrina, 

 Gray.) 



Numbers absent, viz., 2, 14 and 56. 



Observations. 



Lest it should be thought that it is only necessary to present 

 a fragment of a sponge to have its name and description pointed 

 out as readily as this might be done with a plant in botany, the 

 former being expected from the accumulated product of a few 

 years, while the latter is one of centuries, I would append the 

 following remarks on the above " Catalogue ^^ : — 



The family of Hircinida requires to be generally reviewed, but 

 the time for this has not arrived, since if not by actual specimens 

 preserved when fresh in a wet state, it must be done by a review 

 of all the illustrated descriptions of this kind that have been 

 published ; while considering that the specimens of Hircinida 

 are exceedingly numerous and very much alike, nothing but an 

 opportunity of this kind holds out any hope of their e\QY being 

 collated, divided and finally arranged in such a manner as would 

 be useful to the student. In the spiculiferous sponges the form 

 of the spicule often facilitates this, but in the Hircinida generally. 



