1 72 THE DEPTHS OF THE SEA [CHAP, iv 



these for the region in which they are common 

 under very different climatal conditions is within a 

 few miles, and there is no intervening barrier hut 



FIG. 32. Ophiomusium lymani, WTVILLE THOMSON. Dorsal surface ; natural size. (No. 45. 



they certainly are not abundant. AmpMura abys- 

 sicola, SARS, was in great numbers sticking to the 

 sponges, and OpMacantha spinulosa was nearly as 

 common as in the cold area. 



