182 TBANSACTIONS LIVEKPOOL BIOLOGICAL SOCIETY 



Isodictya perplexa 

 4, X. Isodictya involuta 



Isodictya paupercula 

 4, XL Microciona tumulosa 



Isodictya trunca 

 4, XII. Isodictya hispida 



Isodictya nodosa 

 4, XIII. Isodictya pertennis 



Hymedesmia Peachii 

 4, XIV. Isodictya deformis 



Isodictya collina 

 4, XV. Hymeniacidon tenebrosus 



Isodictya funalis 

 4, XVI. Isodictya insequalis 



Isodictya implicita 

 4, XVII. Raphiodesma intermedium 



Raphiodesma fallaciosum 



Reniera perplexa, B. 

 ? Hymeniacidon involutum, B. 

 ? Desmacidon pauperculum, B. 

 Halichondria tumulosa, B. 

 Clathrissa trunca, B. 

 Esperiopsis hispida, B. 

 Hymeniacidon nodosum, B. 

 Hymeniacidon pertenue, B. 

 Myxilla peachi, B. 

 Esperiopsis deformis, B. 

 Esperiopsis collina, B. 

 Suberites tenebrosus, B. 

 Esperiopsis funalis, B. 

 Dendoryx insequalis, B. 

 Joplion implicitum, B. 

 Esperella intermedia, B. 

 Esperella fallaciosa, B. 





PAET II. 



Classified List of the British Sponges described by 

 Bowerbank. 



Phylum POEIFEBA. 



Class I. CALCAREA, Gray. 



1. Order. HOMOCCELA, Polejaeff. 



Leucosolenia botryoides, Ellis & Sol., Ill, (Hseckel, 



6, p. 65). 

 ,, contorta, B., Ill, (Hseckel, 6, p. 91). 



,, coriacea, Fleming, III, (Hseckel, 6, p. 24). 



,, lacunosa, Johnst., IV, (Hseckel, £,p. 70). 



2. Order. HETEEOCCELA, PolejaerT. 



Sycon compressum, auctt., I, (Hseckel, 6, p. 360). 



,, coronatum, Ellis & Sol., II, (Hseckel, 6, p. 304). 



,, elegans, B., II, (Hseckel, 6, p. 338). 

 Ute glabra, O. Schmidt, II, (Hseckel, 6, p. 349). 

 Leucandra fistulosa, Johnst., V, (Hseckel, 6, p. 197). 

 gossei, B., VI, (Hseckel, 6, p. 177). 



