22 BULLETIN 95, UNITED STATES I^ATIOIv^AL MUSEUM. 



developed; origin of dorsal slightly in advance of ventrals, nearer 

 tip of snout than base of caudal by about two-thirds length of head ; 

 scales smooth, firm, their edges with weak serrations — these serra- 

 tions inconspicuous in the young from the Baj^ of Concepcion, Lower 

 California; dorsal, anal, and caudal, each with a narrow sheath of 

 scales; ventral scutes well developed. 



Ground color in spirits, greenish, scales dusky edged; trace of a 

 dark median line on back; a broad well-defined silver band along- 

 side on level of eye extending from opercle to base of caudal, mar- 

 gined above with blue, narrowing on caudal peduncle and suddenly 

 widening at bast of caudal ; belly with a yellowish wash ; fins yellow- 

 ish ; caudal lobes tipped with black. 



Jordan and Herre in a Review of the Herring-like Fishes of 

 Japan,^ states as a character of the genus Harengula " adipose 

 eyelid obsolete" and include in the synonymy of this genus Lile 

 Jordan and Evermann^ {stolifera). Our specimens and others from 

 Concepcion Bay, Lower California, in the Reserve Series of the 

 Bureau of Fisheries, identified as this species, have an adipose 

 eyelid. It is translucent and lying against the silvery iris might 

 easily be overlooked. The adipose eyelid is also present in speci- 

 mens of H. Tnoluccensis from Bulan, Philippine Islands. This genus 

 isvery close to AS'arrZ/ne??^, differing mainly in having fewer vertebrae. 



The niunber of dorsal and anal vsljs in this species is subject to 

 considerable variabilitj^ 



Family ENGRAULIDAE. 



THE ANCHOVIES. 



KET TO GENERA REPRESENTED. 



c^. Vertebrae about 41 in number ; bones firm ; species chiefly tropical. 



Stolephorus, p. 22. 

 a^ Vertebrae about 45 ; bones feeble ; species of the temperate zones. 



Engraulis, p. 23. 



Genus STOLEPHORUS Lacepede. 



KEY TO PERUVIAN SPECIES. 



c\ D. 14 ; A. 23 or 24 ; depth of head at occiput equal to length of head. 



lapirulus, p. 23. 

 a^ D. 16 or 17 ; A. 26 or 27 ; depth of head at occiput 2 in length of head. 



peruamts, p. 23. 



1 rroc. U. S. Nat. Mus?., vol. 31, 1907, p. 6.33. 



2 Fish. North and Mid. Amer., vol. 1, 1896, p. 431. 



