G. SPONGIA. 183 



stems ; branches short, wide, palmated at the extre- 

 mities, and hollowed on one of their surfaces. 



^TAILED. 



146. Spongia caudigera. Upright, compressed, 

 and palm-branched; upper ramifications presenting 

 long upright tails in very distinct net-work. 



Indian Ocean. 



MAILED. 



147. Spongia loricaris. Branches loose and nar- 

 row like straps, a little compressed, divided, irregu- 

 larly curved, and porous ; fibres adhering. 



LATTICED. 



148. Spongia cancellata. Branching, fan-shaped, 

 and incrusted ; branches cylindrical, flexuous, anasto- 

 mosed, and forming a fan-shaped net ; surface finely 

 reticulated. 



TOW-LIKE. 



149. Spongia stuposa. Branches short, cylindrical, 

 a little incrusted, obtuse, nearly dichotomous, hairy, 

 and of the consistence of tow. 



European Ocean. 



LINEN. 



150. Spongia linteiformis. In a round tuft; the 

 branches rather narrow, laciniated or fringed, rough 

 and harsh to the touch. 



Var. B. Branches nearly membranous, anasto- 

 mosed in net-work. 



Indian Ocean. 



