26 APLYSILLA. 



Genus APLYSILLA. 



Small, lamellar, mostly incrusting Aplysillidae, with a skeleton 

 composed of immerous isolated, small, dendritically ramifying, 

 upright fibres. Without cells in the spongin-wall of the fibres. 



Aplysilla rosea, Scbulze. 



Aplysilla rosea, F. E. Schulze, " Uutersucbuugeu liber den Ban uud die Eut- 

 wicklung der Spongien.— IV. Mittbeilung. Die Familie der Aplj'si- 

 nidse," Zeitschrift fiir wissenscbaftliche Zoologie, Baud xxxv. Seite 416 

 (1878). 



Aplysina cruor, H. J. Carter, " Supplenient to the Descriptions of Mr. Brace- 

 bridge "Wilson's Australian Sponges," Annals and Magazine of Natural 

 History, ser. 5, vol. xviii. p. 286 (1886). 



Aplysina ncevus, H. J. Carter, " Descriptions and Figures of Deep-sea Sponges 

 and tbeir Spicules, from the Nortb Atlantic Ocean, dredged up on board 

 H.M.S. ' Porcupine,' " Annals and Magazine of Natural History, ser. 4, 

 vol. xviii. p. 229 (1876). 



Aplysina ncevus, H. J. Carter, " Supplement to the Descriptions of Mr. Brace- 

 bridge Wilson's Australian Sponges," Annals and Magazine of Xatural 

 History, ser. 5, vol. xviii. p. 285 (1886). 



Verongia rosea, Barrois, " Embryologie des quelques eponges de la Manche," 

 Annales des Sciences Naturelles (1876), 



Incrusting, 3-5 millim. high, sponges. The surface is covered with high 

 and slender conuli, which are on an average 2 millim. apart. The colour of 

 the living sponge is rose-red. The fibres of the skeleton are at the base 0*2 

 millim. thick ; they taper towards the upper end and terminate in the conuli. 



Geogeaphical Distribution. — European coast of the North Atlantic and 

 Mediterranean (Barrois, Carter, Schulze). 



Soutb coast of Australia : Port Phillip Heads ( Wilson). East coast of Aus- 

 tralia : Port Jackson (Lendenfeld). 



Aplysilla violacea, Lendenfeld. 



Ajilysilla violacea, E. v. Lendenfeld, " L^eber Coelenteraten der Siidsee. — 11. 

 Neue Aplysinidse," Zeitschrift fiir wissenscbaftliche Zoologie, Band xxxviii. 

 Seite 237 (1883). 



Incrusting sponges, 1-5-14 millim. thick. Irregular protuberances often 

 arise from the upper surface, which is covered with conuli 2-4 millim. 



