Fig, 6i. — Encephaloides armstroyigi, Armstrong's Spider-crab, 

 showing the swollen cavernous gill- chambers. The four pairs of crawl- 

 ing legs are too long to be shown. This crab is one of the characteristic 

 inhabitants of the lOO-fathom line in Indian Seas. 



Fig. 66. — Iconaxiopsis atidamanensis, from the Andaman Sea, 238- 

 2go fathoms ; enlarged twice. This small Scorpion-lobster differs very 

 little from Iconaxiopsis laccadiveiists, which shelters itself in the branches 

 of deep-sea zoophytes. The exact habits of Iconaxiopsis andamanensis 

 are not known. 



{To face page 266. 



