CHARACTERISTIC DEEP-SEA TYPES. CRUSTACEA. 49 



region only a single species, Bathynomus giganteus (Fig. 252), 

 has been described, but this is by far the largest isopod known, 

 and is more than eleven inches long ! The eyes of this giant 

 are placed on the lower side of the head, and consist, according 

 to Milne-Edwards, of no less than four thousand facets. 



The amphipods have not been studied, but the collection from 

 the Atlantic coast of the United States contains several inter- 

 esting species ; among them the 

 great angular and spiny Epime- 

 ria loricata (Fig. 253), first de- 

 scribed from specimens taken by 

 the Norwegian expedition in the 

 North Atlantic, and a single speci- 

 men of the very peculiar Neohela 

 pasma. 



The pycnogonids from the West 

 Indian region have not yet been 

 described, but those from the At- 

 lantic coast of the United States, which have been studied by 

 Prof. E. B. Wilson, are especially interesting. The most striking 



Fig. 253. Epimeria loricata. f . 

 (S. I. Smith.) 



Fig. 254. Colossendeis colossea. |. (E. B. Wilson.) 



feature of the species is their great size, most of them being gi- 

 gantic as compared with shallow-water species. There were ten 



