PISHES OF WEST COAST OP PERU. 59 



Scales small ; cheeks and opercles scaly, rest of head naked ; lateral 

 line with a moderate arch becoming straight above fourth anal ray; 

 scales of lateral line enlarged ; scutes rather weak. 



Dorsal spines weak, fitting into a groove; first spine very weak; 

 fourth dorsal spine longest, 2.68 in head; anterior soft rays of dorsal 

 and anal longest; dorsal and anal each with a detached finlet; caudal 

 forked; ventrals small, their tips reaching one-third the distance 

 from base to soft rays of anal. 



Color in alcohol, dusky blue on back becoming silvery, tinged 

 with yellow on bell}" ; fins clusk}^ ; a dark area at tip of opercle and in 

 axil of pectoral. 



We have provisionally identified this species as D. scambrirmg. It 

 appears to agree very well with Snodgrass and Heller's description 

 of individuals from the Galapagos Islands. The fin counts of our 

 specimen agree more closely with those given in their table of 

 measurements^ than with those given in the description. We have 

 compared this specimen with an example of B. sanctaehelenae, V2,\ 

 inches long, from Easter Island, from which it differs in having the 

 body not tapering so sharply anteriorly and posteriorly; the head 

 longer, snout not so pointed, eye smaller, and the interorbital 

 narrower. 



Genus TRACHURUS Rafinesque. 



85. TRACHURUS SYMMETRICUS (Ayres). 



JUEEL; JUKEL-CITO. 



Plate 5, fig. 2. 



Caranx symmetricns Ayees, Proc. California Acad. Sci., vol. 1, 1855, p. 62. 

 Caranx (Trachnrus) cuvieri Steindachnee, Ichth. Beitr., vol. 1, 1875, 



p. 16 ; Talcaliuano, Callao, Juan Fernandes, Galapagos. 

 Trachurus pictiiratiis Jordan and Evermann, Fishes North and Mid. 



Amer., vol. 1, 1896, p. 909 ; not of Bowdich. — Abbott, Marine Fishes 



of Peru, Proc. Acad. Nat. Sci. Phila., 1899, p. 346.— Delfin, Cat. Pisces 



de Chile, 1901, p. 54. 



One specimen. No. 09714, 44 cm. in length, and three speci- 

 mens, No. 413, 11.3 to 14.2 cm. in length, from Callao, and one 

 specimen, No. 09489, 9.2 cm. in length, and two specimens, No. 

 09454, 7.3 and 7.7 cm. in length, from Lobos de Afuera. 



Head 3.27 in length; depth 4.2; eye 7.1 in head; snout 3.5; max- 

 illary 2.9 ; interorbital 5.73 ; pectoral 1.1 ; D. VIII-I, 33 ; A. II-I, 28 ; 

 scutes in curved part of lateral line, 54; in straight part, 47; length 

 of curved part lateral line, 1.06 in straight part. 



Body elongate, spindle-shaped (compressed in the young) ; caudal 

 peduncle very slender, its depth about 2 in eye; head large, snout 



1 Shore Fishes, Galapagos Islands, p. 363. 



