120 THE DEPTHS OF THE SEA. [CHAP. ITI. 
Asteropsis pulvillus, O. F. MULLER, were not met 
with beyond the 100-fathom line. A curious little 
group of cushion stars, hitherto supposed to be con- 
fined to high latitudes, were represented by Péleraster 
militaris, M. and 'l., and P. pulvillus, SARs, and by 
two forms new to science,-—one, Korethraster his- 
pidus, sp. n., with the whole of the upper surface 
covered with long free paxille like sable brushes (Fig. 
15). Ranges of delicate spatulate spines border the 
Fic. 16.—Hymenaster pellucidus, WY VILLE THOMSON. Ventral aspect. Natural size. (No. 59.) 
ambulacral grooves. As in Pteraster, there is a double 
row of conical water feet. The other genus (Fig. 16) 
is perhaps even more remarkable. The star-fish is 
very flat, the dorsal surface covered with short paxillze 
which support a membrane as in Pleraster. A row 
of spines fringing the ambulacral grooves is greatly 
lengthened and webbed, and the web running along 
the side of one arm meets and unites with the web 
