DR. GUNTHER ON THE FISHES OF CENTRAL AMERICA. 433 
82. CHORINEMUS ALTUS. 
D.5|45. A. 2| 55 
The height of the body is contained thrice in the total length (without caudal), the 
length of the head four times and one-fourth. 
Eye rather large, its diameter being equal to 
the length of the snout, and one-fourth of 
that of the head. Lower jaw projecting be- 
yond the upper. “Maxillary very narrow 
posteriorly, scarcely extending to the ver- 
tical from the hind margin of the eye; the 
length of the intermaxillary is contained 
once and three-fourths in the length of the 
head. The infraorbital, situated above the 
maxillary, is as broad as the bone next above 
it; none of these bones reach to the anterior 
preopercular ridge. Pectoral fin longer than 
the ventral, nearly as long as the head (with- 
out snout). Coloration uniform. 
One example, 11 inches long, has been recently sent by Capt. Dow from Panama. 
83. CHORINEMUS INORNATUS, 
Oligoplites inornatus, Gill, Proc. Acad. Nat. Sc. Philad. 1863, p. 166. 
. D.5|5, A. 2|a. 
“The height of the body enters four times and two-thirds in the total length; the 
length of the head five times and two-thirds. The upper maxillary reaches nearly to 
the vertical from the hinder margin of the orbit; the intermaxillary enters twice and 
one-third in the head’s length. The snout is a little longer than the diameter of the 
eye; the latter equals a quarter of the head’s length. ‘The infraorbital bones do not 
extend to the preoperculum; the one above the maxillary bones is wider than the one 
above itself, and as wide as that behind the eye. The opercular apparatus is vertical in 
front of the pectoral, and for an equal space above. The preoperculum is nearly 
vertical, and its angle obliquely rounded. The width of the operculum and suboper- 
culum in front of the lower axilla of the pectoral equals the diameter of the eye and 
the interval between suboperculum and axil. ‘lhe pectoral equals the interval between 
its axis and the hinder border of the pupil; the ventral is rather shorter, but its end 
almost or quite reaches to the anus. The colour is uniform, tinged with blue above.” 
One adult specimen was collected by Capt. Dow on the Pacific coast of Central 
America. 
VOL. VI.—PART VII. 30 
