Astyanax aeneus. (Gunther). 
Head 4: depth 2.2/5; D. 11, 8; A. 111, 247; scales 33 
in lateral line to caudal base and 2? more on latter; 7 
scales above 1. 1., 6 below; 15 predorsal scales; snout 33 
in head; eye 2 4/5; maxillary 2 2/5; interorbital 22. 
Body compressed, also caudal peduncle. Head width half 
its length. Snout convex, length about half its width. Eye 
large, hind pupil edge sbout midway in head length. Mouth 
with snort gape. Jaws about even. Maxillary slightly beyond 
eye front, apparently toothless. Inner premaxillary teeth 
5 and 4 externally each side. Infraorbital width 2/3 of eye, 
narrow strip of skin separating preopercle ridge. Gill-rakers 
7 - 11, lanceolate, about 3/5 of filaments and latter 14 in 
eye. Scales with 8 to 11 apical marginal striae; basal cir- 
culi moderetely fine. Dorsal origin about. midway between 
snout tip and caudal base. Anal begins below hind part of 
dorsal base. Ventral inserted well before dorsal origin and 
apparently (demaged) not reaching anal. Color in alcohol; 
dull brown, with obscure brassy band along middle of side, 
about wide as eye. Pull dusky humeral blotch, little smaller 
then eye, just above origin of lateral line. Length 60 mm. 
(without caudal). No locality, though likely from } 
Compared with examples in the Academy from Gu 
mala, about same size, the above has a little narrower 
orbital and narrower infraorbital. 
