DESCRIPTIONS 



OF 



SOUTH AFRICiN SP0NGE8 



PART II. 



E. KIllKPATlUCK, F.Z.S. 



BRITISH MUSSITM (NATURAL 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 Triptoleinus found in the canals of a dead 

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

 species : — 



Order LITHISTIDA. 

 Sub-Order HOPLOPHORA. 



Family TetracladidaB. 



Discodermia natalensis, sp. n. 



Family ScleritodermidaB. 



Microscleroderma Mrsutum, gen. et ap. nor. 



Sub-Order ANOPLIA. 



Family AzoricidaB. 

 Lithobaetrum forts, gen. et sp. noT. 



