BY R. VON LENDENFELD, PH.D. 1131 



Gastric Quadriradiate s^ncules. Basal ray straight, tapering 

 from the base to a sharp point usually shorter, 0-18 mm., and 

 rather thinner than lateral rays, forming with each of these latter 

 an angle varying from 105*^ to 110'^ ; lateral rays more or less 

 cylindrical, either straight or slightly curved forwards, rarely 

 exceeding 0225 mm. in length, with a diameter of 0-015 mm. ; 

 apical ray curved, more or less sharply pointed, length not 

 exceeding 006 mm. The length of the apical ray, however, is 

 variable, and there are amongst the quadriradiate spicules many 

 triradiate spicules also, Triradiate spicules of the Parenchyma. 

 Most quite regular, rays straight, smooth, tapering from the 

 base to sharp points, reaching 0-75 mm. in length and 0-065 mm. 

 in diameter. 



Dermal Triradiate spicules. Sagittal, all rays of the same 

 length, rarely exceeding 0-35 mm., and of the same diameter, 

 0-02 mm., either tapering from the base to sharp points or of a 

 more cylindrical form ; basal ray straight, lateral rays curved, 

 forwards, forming each with basal ray an angle of about 115°. 

 Acerate spicules. In the walls of the body, sparsely scattered 

 here and there in the Parenchyma, either isolated or in groups, 

 fine linear, straight, occasionally slightly curved, reaching 0-3 

 mm. ; near the Osculum piercing the wall in perpendicular 

 direction, either spindle-shaped or rather cylindrical, but sharp 

 pointed, straight or slightly curved, O'l mm. long, 0*304 mm. in 

 diameter. 



Locality: Station 36, April 23, 1873; off Bermudas, 32 

 fathoms, mud. East Coast of Australia, Port Jackson. Von 

 Lendenfeld. 



45. SPECIES LEUCANDRA VILLOSA. Nov. spec. 



This Sponge appears in the shape of the very large thin- walled 

 and irregular sacs with an extremely wide Osculum. These sacs, 

 of an irregular cylindrical or oval shape, attain a length of 50 

 and width of 25 mm. and more. They generally appear com- 

 pressed, with an oval transverse section, the large axis of the 

 ellipse about twice as long as the small one. The Osculum is 



