260 TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 



Genus Tethya, Lamarck. 

 Sponge of a more or less spherical form. Megascleres 

 styli. Microscleres spherasters. 

 Tethya lyncurmm, Lin., XV. 



Genus Hymedesmia, Bowerbank. 

 Thin, encrusting. Megascleres tylostyles. INIicros- 

 cleres asters. 



Hymedesmia stellata, B., XXVIII. 



c. Order. MONOCEEATINA, Lendenfeld. 



Family I. Spongid^, Schulze. 



Leiosella pulchella, Sowerby, LXV. (Lendenfeld, 



13, p. 211). 

 Aplysina zetlandica, B., LXX. (Lendenfeld, 12, p. 



403.) 



Family II. Bpongelid^, Vosmaer. 

 Spongelia fragilis, Mont., var. irregularis, LXIX and 

 XCI. (Lendenfeld, 12, p. 662.) 



LITEKATUKE. 



1. Carter, H. J. Descriptions and figures of Deep- 



Sea Sponges and their spicules, from the Atlantic 

 Ocean, dredged up on board H. M.S. 'Porcupine' 

 chiefly in 1869. Ann. Mag. Nat. Hist., 1876. 



2. Dendy, a. a Monograph of the Victorian Sponges. 



Part I. The Organisation and Classification of the 

 Calcarea Homocoela, with descriptions of the 

 Victoria Species. Tr. K. Soc. Victoria, III, part 

 I, 1891. 



3. Synopsis of the Australian Calcarea 



Heterocoela, with a proposed classification of the 

 group and descriptions of some new genera and 

 species. Proc. R. Society of Victoria (N.S.), V, 

 1893, pp. 69—116. 



