1404 Bulletin ^7, United States National Museum. 



South America, Brazil north to Venezuela; generally common; the speci- 

 mens here described (10892 M. C.Z.) from Cachiura. (Acoupa, a Portu- 

 guese name in Guiana. ) 



Cheilodipterus acoupa, LACEPEDE, Hist. Nat. Poiss., in, 546, 1802, Cayenne. 

 Lutjanus cayennensis, LACEPEDE, Hist. Nat. Poiss., iv, 196 and 245, 1802, Cayenne. 

 Otolithus rhomboidalis, CUVIEE, llegne Animal, Ed. 2, II, 173, 1829, Cayenne; based on 



Lutjan de Cayenne, LACEPKDE. 

 Otolithus toeroe, CUVIER & VALENCIENNES, Hist. Nat. Poiss., v, 72, pi. 103, 1830, Cayenne ; 



same type as Lutjan de Cayenne, LACEPEDE, Surinam ; Brazil ; Lake Maracaibo ; 



CUVIER & VALENCIENNES, Hist. Nat. Poiss., ix, 478, 1833. 

 Otolithus cayennensis, GUNTHER, Cat., n, 309, I860. 

 Cynoscion acoupa, JORDAN, Proc. U. S. Nat. Mus. 1886, 588. 

 Cestreus acoupa, JORDAN & EIGENMANN, I.e., 363, 1889. 



1775. CYNOSCION SQUAMIPINNIS (Giinther). 



Head 3i ; depth 4 ; eye about 6 ; snout 3|. D. VIII-I, 21 or 22 ; A. II, 10 ; 

 scales 10-70-23. Mouth moderate, not very oblique ; snout long; maxil- 

 lary reaching a little beyond eye, its length about 2-| in head ; pectoral 

 shortish, If in head; lower jaw very prominent; lateral line becoming 

 straight opposite front of anal; caudal rhombic, its middle rays produced, 

 longer than the outer rays; soft dorsal and anal scaly ; gill rakers long 

 and slender about x -f- 11 ; dorsal spines weak, the longest 2| in head. 

 Color, uniform silvery ; sides minutely punctulate; axil brown; ventrals 

 yellowish. Pacific coast of tropical America; known from a few speci- 

 mens taken at La Union and Panama; those here described in the Museum 

 at Cambridge, (squama, scale; pinna, fin.) 



Otolithus squamipinnis, GUNTHER, Fishes Central America, 387 and 429, 1869, Panama. 

 Cynoscion squamipinne, JORDAN & GILBERT, Proc. U. S. Nat. Mus. 1881, 232. 

 Cestreus squamipinnis, JORDAN & EIGENMANN, I. c., 364, 1889. 



1776. CYNOSCIOX OTHOXOPTERUS, Jordan & Gilbert. 



Head 3^- ; depth 4; eye 6^ in head. D. IX-I, 23; A. II, 10; scales 66, 60 

 pores. Body rather elongate, the back somewhat elevated, the profile 

 from tip of snout to dorsal nearly straight; caudal peduncle rather long 

 and slender, its depth 4 in head. Head long and pointed, compressed, not 

 regularly conical; mouth large, the lower jaw projecting; maxillary 

 broad, reaching to or a little beyond posterior margin of orbit; premax- 

 illaries in front on the level of lower part of pupil; length of gape 2 in 

 head. Teeth in upper jaw in a moderate band which becomes narrower 

 laterally; upper jaw with 2 small canines, their length scarcely diam- 

 eter of pupil;- some of the other anterior teeth enlarged and larger than 

 the lateral teeth ; teeth in lower jaw in a narrow band in front, in a 

 single series laterally, the lateral teeth much larger than the anterior. 

 Eye moderate, broader than preorbital, narrower than maxillary, its 

 diameter a little greater than ^ interorbital space; preopercle with its 

 membranaceous border broad and covered with small scales. Gill rakers 

 long and strong, nearly as long as eye. Scales small, all with conspicuous 

 membrauaceous edges ; all the fins excepting spinous dorsal completely cov- 

 ered with small scales, the bases of the fins thickened by them ; a few scales 



