FISHES OF WEST COAST OF PERU. 61 



Genus CARANX Lacepede. 



KEY TO SPECIES. 



o\ Not more than 25 rays in dorsal and 20 in tlie anal; D. VIII-I, 23; A. 



II-I, 20 ; developed scutes 47 to 50 ; breast scaly caballus, p. 61. 



c^ Dorsal rays more than 25; anal rays more than 20; D. IX-I, 28; A. 



II, 28 peruanus, p. 62. 



86. CARANX CABALLUS Gunther, 

 Plate 5, fig. 3. 



Trachurus hoojis Giraed, Pacific R. R. Snrv., vol. 10, Fish., 1858, p. 108; San 



Diego ; not Caranx boops Cuvier and Valenciennes. 

 Oaranx caballus (Iunther, Fish. Centr. Amer., 1869, p. 431; Panama. — 



EvERMANN and Jenkins, Proc. U. S. Nat. IMus., vol. 14, 1891, p. 138; 



Guaymas. — .Jordan and Eveemann, Fishes North and Mid. Amer., vol. 



1, 1896, p. 922. — Gilbert and Starks, Fishes of Panama Bay, Mem. 



California Acad. Sci., vol. 4, 1904, p. 78. 

 Caranx girardi Steindachner, Ichth. Notizen, \o\. 14, 1869, p. 25 ; San 



Diego. 

 Caranx boops Gill, Proc. Acad. Nat. Sci. Phila., 1862, p. 261. 



One specimen, field No. 09693, 42 cm. long, from Lobes de Tierra, 

 taken with a trolling line along with " Sierras." 



Head 3.56 in length; depth 3.55; eye 4.65 in head; snout 3.58; 

 maxillary 2.51 ; interorbital 3.21 ; pectoral long, falcate, 2.8 in length ; 

 D. VIII-I, 23 ; A. II-I, 20 ; scutes 47. 



Body elongate, not strongly compressed; arch of dorsal and ven- 

 tral outline equal; caudal peduncle depressed, its least height about 

 one-half its breadth; head short, snout pointed, upper profile con- 

 vex; eye large; adipose ej'elids well developed; mouth small; jaws 

 equal ; maxillary reaching vertical from anterior border of pupil, its 

 greatest breadth equal to diameter of that portion of eye not cov- 

 ered by adipose eyelid; teeth small, villiform, in a narrow band in 

 the upper jaw, outer row slightly larger; in a single row in lower 

 jaw ; small teeth on tongue, vomer, and palatines. 



Scales small, a small area on cheek and upper part of opercle 

 scaled, rest of head naked ; breast scaly ; curve of lateral line low, be- 

 coming straight under origin of soft dorsal ; scutes on caudal pedun- 

 cle stout, very broad, from below last ray of dorsal to base of caudal, 

 six scutes; pectoral much longer than head, tip reaching to below 

 ninth dorsal ray; ventrals very short, tips reaching halfway from 

 base to first anal spine. Color in alcohol, dusky blue or green on 

 back; belly silvery tinged with golden; a black area on posterior 

 border of opercle above base of pectoral ; axil of pectoral black ; fins 

 dusky. 



This individual agrees very well with an example a foot long from 

 Panama. 



This species is found from San Diego to Peru and the Galapagos 

 Archipelago. 



