406 DR. GUNTHER ON THE FISHES OF CENTRAL AMERICA. 
Loricaria uracantha . . . . . Chagres. — — 
Macrodon microlepis . . . . . Chagres. — — 
Tetragonopterus panamensis . . . — Panama. _ 
ZEDCUS vetateie ai gir ec aro eee a — Panama. a 
Chalcinopsis striatulus . . . . — * Panama. — 
chasrensisizgey ere Charres. — — 
Anacyrtus guatemalensis . . . . Chagres. — _— 
Haplochilusidoyi) i 2%. . ~ .. — Costa Rica. — 
Pecihatclonzatanee =. — Panama. 
Clic wears |. Chagres. — -- 
§ 9. Descriptive Part. 
In the following descriptive part of this Memoir I have admitted full descriptions of 
those species only which are not described elsewhere ; secondly, descriptive diagnoses of 
those of which figures are given; and, finally, notes on some known species, if they 
appeared to contribute to their better knowledge. For the descriptions of all the other 
species (the insertion of which would be a repetition of matter already published), I 
must refer the student to my general work on Fishes. 
1, CENTROPOMUS APPENDICULATUS, 
Poey, Mem, Cub. i. p. 119. 
D. 8|5 A.2. L. lat. 70-72. 
Nine longitudinal series of scales between the origin of the second dorsal fin and the 
lateral line. The height of the body is contained four times in the total length (with- 
out caudal), the length of the head twice and two-thirds. Preorbital indistinctly 
serrated; suboperculum produced into a short flap, which extends to or nearly to the 
vertical from the origin of the dorsal fin, The intermaxillary extends to below the 
middle of the orbit. Dorsal spines of moderate strength; the third is the longest, and 
about half as long as the head. The second anal spine is generally longer than the third ; 
but sometimes they are equal in length, and even shorter than the third dorsal spine. The 
length of the ventral fin is more than one-half of its distance from the anal. Air-bladder 
with a pair of appendages anteriorly. Silvery; dorsal fins blackish; lateral line black. 
We kave received this species (which was originally described from Cuban examples) 
from Surinam and Mexico. Mr. Salvin and Capt. Dow obtained a specimen from the 
Chagres River, 10 inches long. 
: 2. CENTROPOMUS MEDIUS. 
Giinth. Proc. Zool. Soc. 1864, p. 144. 
D.8|q° Aly. L, lats57, 
Eight longitudinal series of scales between the origin of the second dorsal fin and the 
lateral line. ‘The height of the body is contained thrice and three-fourths in the total 
