Body elongate, depressed in front and tail well compressed, es¬ 
pecially posteriorly. Head rather large, broad. Snout short, broad, 
depressed. Eye small, advanced to first fourth of head. Mouth large, 
well inclined, extends below and behind eye. Teeth very small, in villi- 
form bands in jaws and on vomer. Front nostril in short tube. Interorbital 
broad. Gill opening rather large. Air bladder large. Intestine with 
single circumvolution. Scales fine, very small, narrowly imbricate and 
cycloid. Head, breast and chest largely scaly. Vertebrae 27, of which 15 
caudal. Two dorsals, well separated, first of 6 spines, second opposite 
anal and slightly longer. Caudal rather long. Paired fins moderate, 
ventrals well separated, with spine and 5 rays. 
A well defined genus, with very small scales and known by the large 
conspicuous ocellus at the bases of the upper daudal rays. 
/ 
a. 
Analysis of Species 
D. VI - I, 10 to 12; eye 5i to 6 1/3; no dark transverse bands. 
b. Coloration largely uniform. 
sinensis. 
b. Two conspicuous, inclined backward dark stripes on side 
of head. 
stnogenys 
D. IX or X - 1, 17 or 18; eye 8|; 8 or 9 broad transverse 
dark bands. 
zonatus. 
