Dec. 28, 1916. FisHes or PANAMA— MEEK AND HILDEBRAND. 365 
forward to posterior margin of eye; scales large, ctenoid, present on 
body and chest; dorsal fins 2, well separated; caudal fin rounded; ven- 
tral fins separate. Carniverous. 
91. Hemieleotris latifasciatus (Meek & Hildebrand). 
Eleotris latifasciatus Meek & Hildebrand, Field Mus. Nat. Hist. Pub., 
Zooél. Ser., X, 1912, 68 (Rio Cardenas, Pacific slope, Panama); 
Meek, Field Mus. Nat. Hist. Pub., Zodl. Ser., X, 1914, 131 (Jesus 
Maria, Costa Rica). 
Head 3.4 to 4; depth 3.6 to 4.75; D. VI-I, 9; A. I, 10; scales 35 
to 39. 
Body compressed; head compressed, notably deeper than broad, not 
flat above, profile straight or slightly concave over eyes; snout tapering, 
3.8 to 4.7 in head; eye rather large, 3.5 to 4.15; interorbital 3.9 to 5.2; 
mouth moderate, oblique; the lower jaw projecting; maxillary reaching 
to or slightly past anterior margin of eye, 3.25 to 3.9 in head; teeth small, 
pointed, in bands in the jaws; gill-rakers feebly developed; gill-mem- 
branes attached to the isthmus, the openings extending forward to 
under posterior margin of eye; scales large, ctenoid, ro or 11 rows be- 
tween base of second dorsal and base of anal; origin of first dorsal about 
midway between tip of snout and base of last ray of second dorsal, the 
spines weak, the anterior ones somewhat produced, reaching opposite 
the second or third ray of second dorsal; origin of second dorsal slightly 
in advance of origin of anal, or about midway between middle of eye and 
base of caudal; caudal fin with a few small scales at base, its margin 
rounded; anal fin similar to second dorsal; ventral fins long, reaching 
vent, inserted under base of pectorals; pectoral fins moderate, reaching 
tips of ventrals, 1.04 to 1.25 in head. 
Color dark green above, paler below. Sides with a well defined, 
black band, extending from tip of snout through eye to and on base of 
caudal. Fins unmarked. 
This species is represented by 11 specimens, ranging from 27 to 80 
mm. in length. This fish was taken in fresh water streams on the 
Pacific slope from the Rio Chorrera to the Rio Bayano. 
The air bladder is thin, adnate to the back; intestine very short; 
stomach without blind sacs. 
Habitat: Pacific slope rivers, from Costa Rica to Panama. 
56. Genus Awaous Steindachner. 
Awaous Steindachner, Verh. Mat. Phys. Naturw., 1860, 289 (after 
Cuvier & Valenciennes, les Awaous (ocularis, etc.)). 
