1562 
Analysis of genera 
a" - . Body nearly or quite cylindrical; dorsal 
median or premedian; anal short. 
1 
b • Chlorophthalmlnae. Body moderately long, 
partly cylindrical; head wide as deep; 
snout rather short; maxillary reaches 
below front or middle of eye, which 
large; ventral fins below dorsal, 
1 
c . 
2 
c . 
which premedian. 
Maxillary not reaching over 1/2 in eye; 
interorbital less than vertical eye 
diameter; ventral inserted below dor¬ 
sal; eyes,long as or longer than snout, 
3 in head. Chi pro phthgj.nms. 
Maxillary reaches beyond eye; Interorbit¬ 
al wider than Vertical eye diameter; 
ventral inserted slightly before dor¬ 
sal; eye shorter than snout. 
Bathysauropsis. 
b . Body elongate, subcylinarical or sompress- 
ed; head depressed; snout more or less 
spatulate; mouth large; maxillary reach¬ 
es beyond eye. 
