CHALCEUS T^NIATUS. 211 



and black near the base ; tail slightly forked, and 

 similarly coloured ; scaling large, the edges slightly 

 fringed, adhesive; there is no lateral line percep- 

 tible ; head laterally depressed ; eyes near the mid- 

 dle of the head, iris red and yellow ; mouth terminal, 

 tongue fleshy, jaws nearly equal; teeth, a single 

 row in the under jaw, upper jaw has a series thickly 

 studded on the roof, which are serrated ; gill-covers 

 slightly striated. They live only a short time when 

 taken out of the water, and soon lose their colour, 

 turning to a duller blue. Feeds on fruit, as well as 

 on animal substances. Air-bag double ; intestines 

 form flexures, and have appendices ; milt half the 

 length of the cavity of the body." 



This is a very handsome species, and is coloured 

 bluish grey above, changing to silvery white on the 

 sides and belly ; and the whole is relieved by eight 

 delicate blue longitudinal stripes. The structure of 

 the teeth varies from that of the others. 



D. ll—P. 14— Y. 8— A. 26— C. 25— Br. 4— Yert. 38. 



