88 OKHAMANDAL MARINE ZOOLOGY REPORT PART II 



sponge is a typical leucon person of ovoid form. The canal system is typical. 

 The spiculation consists of the following elements : 



(1) Rather large dermal radiates, mostly with a well-developed centripetal 

 apical ray. 



(2) Large, irregularly scattered radiates of the chamber layer, mostly, at any 

 rate, without apical rays. 



(3) Slender subgastral sagittal radiates, mostly, if not all, with short apical 

 rays ; of typical form and arrangement. These are not mentioned by Jenkin in 

 the case of the type, but probably occur there. I also overlooked them in the 

 specimen recorded by me [1913] from Saya de Malha, but I find on re-examination 

 that they undoubtedly occur therein. 



(4) Gastral quadriradiates ; a good deal smaller than the derma! radiates and 

 with well developed, sharp-pointed, curved apical rays projecting into the gastral 

 cavity. 



(5) Quadriradiates of the larger exhalant canals ; perhaps merely radiates of 

 the chamber layer with short, thorn-like apical rays. 



(6) Stout fusiform oxea projecting radially from the dermal surface ; their 

 outer ends too much broken and corroded for description. 



(7) Slender hair-like oxea (trichoxea) of the peristomial fringe. 



(8) ? A few rather large microxea at the surface in contact with foreign 

 objects. 



A direct comparison with the type has convinced me, as in the case of the 

 Saya de Malha specimen, that there is not sufficient difference to justify a specific 

 separation, especially as there are only single specimens known from the three 

 localities. 



Previously known Distribution. Wasin, East Africa (Jenkin) ; Saya de Malha, 

 Indian Ocean (Dendy). 



Register Number and Locality. XXXV. 9. Off Dwarka. 



6. Leucandra dwarkaensis, n.sp. (Plate I. Fig. 6 ; Plate II. Figs. 10a-10e). 



The single specimen (Fig. 6) is massive and irregular below, compressed above, 

 and terminating in a wide, slit-like vent. The entire body is sac-shaped, with 

 a very wide gastral cavity. Height about 28 mm. ; width in the middle 17 mm. 

 The outer surface is now nearly smooth, but this is doubtless due to the more or 

 less complete erosion of the outer ends of the large oxea. The oscular margin is 

 very thin and shows the remains of a fringe of close-packed, hair-like oxea. A 

 good deal of foreign material is collected on both dermal and gastral surfaces, 

 including numerous small siliceous oxeote spicules. Colour in spirit dirty white. 



The canal system is typical. There is a rather thick gelatinous ectosome 



