D1<]S0JUPTI0NS 



OF 



SOUTH IFRICiN SP0N(IE8 



PART II. 



R. IvIRKPATEICK, F.Z.S. 



BRITISH .MUSKITAI (XATCTRAL HISTORY 



The present paper includes a description of the Lithistid 

 Sponges obtained by Dr. J. D. F. Gilchrist off the Cape and 

 Natal coasts, and sent by him to the British Museum 

 (Natural History). The collection comprises eight specimens 

 representing four species, all of which are new, and four 

 genera, of which three are new. A description is given also 

 of a new species of Triptolemus found in the canals of a dead 

 Lithistid skeleton. The following is a list of the genera and 

 species : — 



(3rder LITHISTIDA. 



Sub-Order HOPLOPHORA. 



Family Tetracladids. 



Discoderinia natalensis, sp. a. 

 Fimily ScleritodermidsB. 



Microscloroderma hirsatum, gi'ii. et sp. jor. 



Sub-Order ANOPLIA. 

 Family Azoricidae, 



Lithobactrum forte, gen. ot sp. dot. 



