172 



THM DEPTHS OF THE SEA. 



[chap. IV. 



these — for the region in which they are common 

 under very diflferent climatal conditions is within a 

 few miles, and there is no intervening barrier^ — but 



Fig. 32. — Ophiomusium lyviaiii, Wvville Thomson. Dorsal surface ; natural size, (No. 45. 



they certainly are not abundant. Amphiura abys- 

 sicola, Sabs, was in great numbers sticking to the 

 sponges, and Ophiacantha spinulosa was nearly as 

 common as in the cold area. 



