90 OKHAMANDAL MARINE ZOOLOGY REPORT— PART II 



7. Haix-like oxea (trichoxea) of the peristome. These are well developed but 

 all broken off short, their remaining portions being densely crowded together. 



8. Microxea. These seem to have been fairly numerous in the dermal layer, 

 but, owing perhaps to the fact that the specimen was first preserved in formalin, 

 they have been extensively eroded and perhaps some of them entirely dissolved 

 away. They seem to have been hastately pointed at one end. 



The most characteristic feature of this species appears to be the external 

 form, and especially the wide, slit-like vent, but, in the presence of only a single 

 specimen, it is impossible to say how far this may be constant. 



The arrangement of the skeleton and the form and size of the principal 

 spicules agree closely with the corresponding features in Leucandra donnani var. 

 tenuiradiata, but in the latter I have found no microxea and no subgastral 

 sagittal radiates. 



Register Number and Locality. XXIII, 6. OfE Dwarka, 15-17 fathoms. 



LIST OP LITERATURE REFERRED TO. 



1873. Bowerbank, J. S. " Contributions to a General History of the Spongiadae," Part IV. {Proc. 



Zool. Soc. Lond., 1873, p. 17.) 

 1905. Dendy, A. "Report on the Sponges Collected by Professor Herdman at Ceylon in 1902." 



(Reports on the Pearl Oyster Fisheries of the Gulf of Manaar, Vol. III., Royal Society, 



London.) 

 1913. Dendy, A. "Report on the Calcareous Sponges collected by the Sealark Expedition in the 



Indian Ocean." {Trans. Linn. Soc. Lond. Zoology. Vol. XVI.) 

 1913. Dendy, A., and Row, R. W. H. "The Classification and Phylogeny of the Calcareous 



Sponges, with a Reference List of all the described Species, systematically arranged." 



{Proc. Zool. Soc. Lond., Sept., 1913.) 

 1908 a. Jenkin, C. E. "The Calcareous Sponges." (The Marine Fauna of Zanzibar and British 



East Africa, from Collections made by Cyril Crossland, M.A., in the Years 1901 and 



1902. Proc. Zool. Soc. Land., 1908). 

 1908 b. Jenkin, C. F. " Porifera Calcarea." {National Antarctic Expedition. Natural History. 



Vol. IV.) 

 1909. Row, R, W. H. "Report on the Sponges Collected by Mr. Cyril Crossland in 1904-1905. 



Part I. Calcarea." (Reports on the Marine Biology of the Sudanese Red Sea. Jo^^n. 



Linn. Soc. Lond. Zoology. Vol. XXXI.) * 



