208 BULLETIN 189, UNITED STATES NATIONAL MUSEUM 



California fish. The depth of the deepest ones in the curved section 

 in Peruvian eximples is 5.0 to 5.9 in head, and that of deepest in the 

 straight part is contained 5.3 to 6.2 in head. In CaUfornia fish the 

 proportions given in the same order are 8.4 to 9.5, and 6.7 to 7.9. 

 The scutes appear to be about equal in number in the two species. 

 No comparisons with specimens from other localities have been made. 



The " jurel" is mentioned among the commercial fishes in the report 

 of the Mission (1943, p. 273) as of some importance, especially in 

 southern Peru. 



Range.— Cosist of Peru. Specimens of the genus reported from 

 Chile and the Galapagos Islands probably also are of this species. 



Genus CARANX Lacepede, 1802 



Body elongate to rather short and deep, compressed; dorsal profile 

 gently to strongly convex; head rather large, compressed, usually 

 blunt; mouth moderate or large, usually terminal; premaxillaries 

 protractile; maxillary rather broad, with a rather large supplemental 

 bone; teeth in jaws more or less unequal, in one or a few series, usually 

 present also on vomer, palatines, and tongue, wanting in large examples 

 of some species; gill" rakers fairly long, generally about 12 to 35 on 

 lower limb of first arch; lateral line with an arch anteriorly, the straight 

 part at least posteriorly armed with bony scutes; first dorsal with rather 

 slender spines; second dorsal and anal similar, generally more or less 

 elevated anteriorly; caudal strongly forked; pectoral long, and usually 

 falcate in adults. 



Two species come within the scope of the present work. 



KEY TO THE SPECIES 



o. Body rather deep, with a high anterior profile, its depth 2.5 to 3.0 in length; 

 gill rakers 15 or 16 on lower limb of first arch; chest almost wholly devoid 



of scales hippos (p. 208) 



aa. Body rounder and more elongate, with a low anterior profile, its depth 3.6 

 in length; gill rakers 28 on lower limb of first arch; chest completely 

 covered with scales caballus (p. 209) 



CARANX HIPPOS (Linnaeus) 



COCINERO 



Scomber hippos Linnaeus, 1766, p. 494, Charleston, S. C. (original description). 



Caranx hippos Jordan and Evermann, 1896, p. 920, fig. 387 (description; distribu- 

 tion; synonymy). — Meek and Hildebrand, 1925, p. 350; Panama, both 

 coasts (synonymy; descriptions; specimens from opposite coasts compared; 

 range) . 



Caranx caninus Walford, 1937, p. 72, pi. 51. fig. a, in color (diagnosis; com- 

 pared with C. hippos of the Atlantic, which was considered distinct; habits). 



Head 3.1 to 3.25; depth 2.5 to 3.0; D. VIII-I, 20 or 21; A. II-I, 

 17 or 18; P. 19 or 20; scales about 130, too small and irregular to 

 enumerate accurately. 



Body robust ; dorsal profile anteriorly very strongly convex, with a 

 low carinate edge over posterior part of head, ventral profile anteriorly 



