1567 
Analysis of species 
a . Chlorophthalmus, Maxillary reaches eye or 
to middle of eye, 
1 
b , Head 3 to 3 1/3; maxillary reaches well 
c * 1 . 
<• 
2 
c . 
beyond front eye edge. 
Scales 58 to 63. 
Scales 50, 
agasslzii^ 
proridens. 
Jo 
b . Head more than 3 1/2; scales.48 to 56. 
l' 
d . Maxillary reaches front eye edge; 
eye scarcely over 3 in head. 
d 
chalybaeus. 
Maxillary reaches well beyond front 
eye edge. 
nlgrtgi^nlg^ 
a^. 
Parasudls . Maxillary not reaching front 
eye edge. 
truculentus. 
