64 



ENDEAVOUR SCIENTIFIC RESULTS. 



from the larger specimens, save that the actinal skin is thicker 

 and unites and conceals the spines along the furrow more 

 fully. 



Loc. — Off Cape Marsden, Kangaroo Island, South Australia,, 

 17 fathoms. 



ECHINASTER SUPERBUS,^ Sf. nov. 



(Plates xxiv.-xxv. ; Fig. 9-10.) 



R = 110 mm. ; r=15 mm. ; R = 7 r. Br=20 mm. ; R = 

 5.5 br. Br at middle of ray =14 mm. ; at tij), 4 mm. Disk 

 small, not elevated ; rays nearly terete, tapering uniformly 

 to tip, somewhat flattened actinally. Abactinal skeleton 

 pretty well concealed in the thick skin, but forming a rather 

 fine mesh-work, with relatively small papular areas, which 

 show no serial arrangement. Papul?e large and numerous. 

 Abactinal spines numerous, isolated, diverse in form, 1-2 mm. 

 high, .5-1.75 mm. thick; few have a simple, pointed or blunt, 

 tip ; usually it is clavate to a greater or less degree, chisel- 

 shaped with one or more notches, or with 5-6 low, rounded 

 summits. Madreporite moderately large, very distinct and 

 quite near centre of disk. Adambulacral plates numerous. 



Fig. 10. x8. 



Fig. 9.x4. 



about twice as wide as long, very well defined, separated 

 from each other by distinct membranous spaces half as long 

 as the plates ; each plate carries, high up in the furrow, a 

 small, curved pointed spine, immediately below which is a 



1. Superbtis= very fine ; in reference to its notable form and size. 



