794 
Analysis of genera 
a • Body with distinct fins, at least on backj pectorals present* 
1 
b , Vomerine teeth present. 
c^. Teeth blunt, mostly granular or molar. 
d * Dorsal rather high, begins on head before gill openings 
pectoral short 
Myrichthys. 
d * Dorsal low, begins behind gill opening; pectoral small. 
Pisodonophis* 
2 
c • Teeth all pointed, none molar; pectoral well developed, 
e^. Dorsal begins more or less behind gill opening* 
f^. Snout moderate or short, less than 1/4 of head. Jaw 
not produced into slender beak, 
g^. Lips not fringed. 
h^* Teeth on sides of upper jaw uniserial or biser¬ 
ial 
.1 
1 • Teeth subequal, without canines* Ophiohthus. 
2 
i • Teeth unequal, some long canines either on 
vomer or in one or both Jaws. My jtrio p his 
• Teeth on sides of upper Jaw in several series 
forming broad bands; Jaws long; lips without 
papillae. 
Xyrias. 
Lips fringed. 
