Dec. 28, 1916. FisHes or PANAMA— MEEK AND HILDEBRAND. 293 
It is eaten by the natives who fry it crisp in oil. Prepared in this way 
the bones and flesh are eaten together, making a very palatable dish. 
Habitat: Atlantic slope of Panama northward to Guatemala. 
39. Reeboides occidentalis sp. nov. 
Type No. 8948, F. M. N. H.; length 115 mm.; Rio Cardenas, 
Corozal, Panama. 
Head 3.35 to 4.1; depth 2.35 to 2.9; D. 11; A. 44 to 50; scales 72 to 80. 
Body deep, strongly compressed; the dorsal region elevated; profile 
deeply concave over eyes in adult, less so in young; head small; snout 
blunt, 3.5 to 4 in head; eye 3 to 3.9; interorbital 3.45 to 3.9; mouth large; 
upper jaw projecting; maxillary reaching posterior margin of pupil, 
1.7 to 2.2 in head; teeth as in preceding species; gill-rakers moderate, 
to or 11 on lower limb of first arch; shoulder girdle with a long, sharp 
spine reaching base of pectoral; lateral line straight, complete; scales 
small and thin; dorsal fin elevated anteriorly, its origin about midway 
between tip of snout and base of caudal or slightly nearer the former; 
adipose fin well developed, over about the seventh ray of anal counting 
from the last ray forward; caudal fin naked, the lower lobe the larger; 
anal fin very long, its origin about midway between tip of snout and 
base of its last ray; ventral fins reaching past origin of anal; pectoral 
fins overlapping the ventrals, a little longer than the latter. 
Color greenish above, silvery below; with bright silvery lateral 
band; an obscure shoulder spot at upper angle of opercle; a larger and 
more distinct black spot about an eye’s diameter behind the first; a 
black caudal spot present. Pectorals greenish; other fins greenish at 
base, reddish at tips. 
We have numerous specimens, ranging in length from 30 to 170 mm. 
_ It is common in all the Pacific slope streams of Panama, from the head 
of tide water up to the mountain streams. 
This species like the preceding is used as food. 
Habitat: Pacific slope of Panamaand probably southward to Colombia 
and Ecuador. 
29. Genus Brycon Miiller & Troschel. 
Prpon; SARDINA. 
Brycon Miller & Troschel, Hors Ichthyologiz, I, 1845, 15 (type Brycon 
falcatus Miller & Troschel). 
Chalcinopsis Kner, Sitzungsbr. K. Bayer. Ak. Wiss. Minchen., 1863, 
226 (type Chalcinopsis striatuus Kner). 
Body elongate, robust anteriorly, compressed posteriorly, covered 
with cycloid scales; dorsal fin over or slightly behind ventrals; mouth 
