~ • Two antorbitals on each side, both very large, of simple 
outlines and separated from each other by horizontal 
boundary line so upper organ entirely above lower; 
upper part of lower antorbital expanding above nostril 
and extending mesad to median ethmoidal crest, which 
I 
barely separates organs of 2 sides; upper antorbitals 
also meeting at median crest; no separate supraorbital 
or suborbital organs. 
i • Eye 3 4/5; upper 
antorbital present. 
- anterorbitali s. 
1 • Eye 4 2/3; upper 
antorbital absent? 
-adenomas* 
i ■ ~~ 
m 
• Supraventral nearer ventral base 
than lateral line. - i qgerophus. 
2 
E • Supraventral nearer lateral line 
than ventral base. 
raonodi. 
g 
®L • Two antorbitals each side, both very large, separated 
from each other by horizontal boundary line so upper 
organ entirely above lower; upper antorbital with 
) - - - ■ 
sharply defined, small, circular, luminous body 
constricted somewhat over half way off from its 
lower lateral edge above eye; lower antorbital with 
narrow extension along ventral edge of orbit, 
ending in similar circular extension below or 
slightly behind eye center; upper antorbitals of 
2 sides meeting at median crest; no separate supra¬ 
orbital or suborbital organs. ----- metonoclam-nna. 
