DR. GUNTHER ON THE FISHES OF CENTRAL AMERICA. 473 
the maxillary is a little more than one-third of the length of the head; maxillary scaly. 
Interorbital space very narrow, concave, one-third of the vertical width of the orbit; 
the concavity is produced by two ridges convergent posteriorly. Head nearly entirely 
covered with ciliated scales. Rays of the vertical fins scaly, the distance between the 
dorsal and caudal fins is one-half of the depth of the free portion of the tail. The 
longest dorsal rays are somewhat behind the middle of the fin, and four-ninths of the 
length of the head. Pectoral rays not prolonged. Body nearly uniform reddish olive ; 
some of the dorsal, anal, and caudal rays with elongate dark-brown spots. 
One specimen, 7 inches long, was collected by Messrs. Dow and Salvin on the Pacitic 
coast uf Panama. 
198. PskUDORHOMBUS BRASILIENSIS. 
Hippoglossus brasiliensis, Ranzani, Comm. Bonon. v. p. 10, tab. 3. 
Rhombus aramaca, Casteln., not Cuy. 
Pseudorhombus vorax, Giinth. Fish. iv. p. 429. 
This species is known to occur on the coast of Brazil; however, there is a specimen 
in the British Museum, which formed part of a collection containing numerous fishes 
from Guatemala; and I mention it, therefore, in this list to draw attention to this species. 
200. APHORISTIA ORNATA, Var. ELONGATA. 
Two examples, 5 inches long, collected by Mr. Salvin on the Pacific coast of Panama, 
differ, from specimens from the West Indies, only in having the body more elongate, its 
depth being contained four times and two-thirds in the total length (with the caudal). 
The number of fin-rays is the same, viz. D. 97, A. 82; L. lat. 98. 
201. AMIURUS MERIDIONALIS. (Plate LXXXI. fig. 1.) 
Giinth. Fish. v. p. 102. 
D. 1/6. A. 28-29. P. 1/9. 
Head one-half or one-third longer than broad; the maxillary barbels extend to the 
end of the head. The length of the dorsal spine is somewhat less than that of the head 
without snout, and nearly equal to that of the pectoral spine. Adipose fin short. The 
height of the body is one-fifth of the total length (without caudal), the length of the 
head one-fourth or two-ninths. Snout obtusely rounded, with the upper jaw longer 
than the lower. The diameter of the eye is one-half or two-fifths of the extent of the 
snout, and one-third or two-sevenths of the length of the postorbital portion of the 
head. The band of maxillary teeth is five or six times as broad as long. ‘The outer 
mandibulary barbels extend to the posterior margin of the gill-membrane. The distance 
of the dorsal spine from the snout is a little more than one-half of its distance from the 
caudal fin; it is finely serrated behind. ‘The length of the base of the adipose fin equals 
that of the dorsal. Caudal fin deeply forked; the upper lobe is somewhat the longer, 
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