BY R. VON LENDENFELD, PH.D. 1109 



comparative length of the basal ray is also variable; in most 

 cases, however, this ray is shorter and rather thinner than the 

 lateral. 



Coloicr : Yellowish-grey. 



Locality: Station 36, April 23, 1873, off Bermuda's, depth 32 

 fathoms ; Mud Station 186, September 8, 1874 ; Lat. 10^ 30' S. 

 Lon. 142° 18' E. ; Cape York, Australia; depth, 8 fathoms, Coral 

 Sand, Challenger. 



14. GENUS. ANAMIXILLA. Polejaeff (1.) 



The spicules in the Parenchyma irregularly disposed, more or less 

 tangental as in the Leuconidae. Ciliated tubes slightly branched. 



26. SPECIES. ANAMIXILLA TORRESII. Polejaeff (2.) 

 The single specimen of Anamixilla torresii of the Challenger 

 collection, presents a colony of tubular individuals ; some indi- 

 viduals are bare-mouthed, some mouthless. The thickness of 

 different individuals varies from 1 to 9 mm., the width of the 

 walls is more constant, reaching 1 mm. on the average. The 

 inner surface is slightly roughened by the protruding rays of the 

 gastric quadriradiates, the outer surface is in a still higher degree 

 roughened by the cortical triradiate spicules. 



Skeleton : Gastric quadriradiate spicides. All rays of the same 

 diameter, 0*02 mm. ; basal ray straight, either sharply or bluntly 

 pointed, of conical form, length varying from 0'16 to 0*4 mm., 

 occasionally rather thicker than lateral rays, forming with each of 

 these an angle of about 115°, lateral rays curved outwards, often 

 highly undulating, tapering from the base to a sharp point, usual 

 length 0-35 to 0-4 mm. ; apical ray curved, sharply pointed, its 

 length not exceeding 0-06. 



Gastral triradiate sjncides: Rays smooth, tapering from the 

 base to sharp points, I'eaching 0*4 mm. in length, with a diameter 

 of 0*015 mm. ; basal ray straight, lateral rays slightly curved 



(1.) X. PoUjacff. L.c, p. 50. 



(2.) N. Polejaeff. L.c, p. 50, pi, IV., fig. 2a-2c. 



