148 BLACK-BLOTCHED CYCHLA. 



straight; opercles scaly, witli smooth edges; gill- 

 opening semilunar ; the milt double, half the length 

 of the cavity of the body ; roe also double, of a 

 like length. Lives half an hour when taken from 

 the •water/' The formula of the fins is, — 



D. 16/17— P. 14— V. 1/5— A. 3/11— C. 36 ?— Br. 6— 

 Ribs, 16 pairs. 



