Spongillidae. 245 



three described above, I have myself lately added five additional represen- 

 tatives of the family to the African fauna. The precise provenance of 

 one of the sponges on Weltxer's list (Corvospongilla loricata, WeltxerJ 

 is doubtful : it probably came from the Nile ; Avhile one other (Spongilla 

 carteri, Carter) has been recorded. from Africa (Victoria Xvanza) on 

 e\ddence that does not seem to me by any means conchisive.') Omitting 

 these tvvo doubtful species, we have thus 28 known to occur on the Con- 

 tinent of Africa. 



Their distribution on that Continent may be stated concisely as 

 follow)^ : — 



Sponges of the Nile System. 



Spongilla (Euspongilla) alba var. cerehellata, Bowerbaxk. 



Spongilla (Euspongilla) biseriata, Weltxer. 



Spongilla (Eunapiius) aetheriaej Anxaxdale. 



Spongilla (Eunapius) nitens, Carter. 



Spongilla (Stratospongilla) sumatrana, Weber, var. ^4, Weltxer. 



Dosilia brounii (Kirkpatrick). 



Corvospongilla scabrispiculis, Axxaxdale. 



Sponges of Tropical East Africa (coastal region). 



Spongilla (Stratospongilla) sumatrana, A\'ebeh, var. B, Weltxer. 

 Pectispongilla sansibai'ica (Weltxer). 

 Corvospongilla bölunii ('Hilgexdorf). 



Sponges of the Zambesi System. 



Spongilla (Euspongilla) biseriata, Weltxer. 

 Spongilla (Eunapius) nitens, Carter. 

 Spongilla (Eunapius) michaelseni, sp. nov. 

 Spongilla (Stratospongilla) rousseletii, Kirkpatrick. 

 Spongilla (Stratospongilla) africana, sp. nov. 

 Corvospongilla victoriae, sp. nov. 

 Corvospongilla zambesiana (Kirkpatrick). 



Sponges of the Congo System. 



Spongilla (Stratospongilla) schubotzii, Weltxer. 

 Tubella pottsii, Weltxer. 



') See Kirkpatrick, Proc. Zool. Soc. London, 1906 (i), p. 219 and Axxaxdale. Faun. 

 Brit. Ind., Freshw. Sponges. p. 87 (1911). 



