FISHES OF WEST COAST OF PEEU. 29 



Color in life of specimens from Pacasmayo, olivaceous silvery; 

 ventrally in posterior half of body, light purplish; bright spot of 

 same color on opercle just below level of lateral line, and of the 

 size of the pupil; light greenish silvery band on side, almost dis- 

 appearing under anterior dorsal; but the dorsal limit of the band 

 may be traced forward, and in the extended path of the stripe 

 anteriorly are two or more spots of the same color, the most anterior 

 of which is just behind opercle; glassy gold spot back of and above 

 eye; the gold not superficial but seen through transparent glassy 

 tissue; scales below lateral line and, to some extent, those above, with 

 minute olive spots or specks; sides of head with similar specks; on 

 lower part of sides these specks are red; similar minute red and 

 olive spots on anal and to some extent on caudal; fins more or less 

 tinged with yellow ; caudal blackish at base of fork, a green spot on 

 sides just anterior to this. 



Genus LEBIASINA Cuvier and Valenciennes. 



33. LEBIASINA BIMACULATA Cuvier and Valenciennes. 

 CHORO-COaUE; LAS PENITAS. 



Lebiasina Mmaculata Cuvier and Valenciennes, Hist. Nat. Poiss., vol. 19, 

 1846, p. 382, pi. 587.— GtJNTHER, Oat. Fish. Brit. Mus., vol. 5, 1864, p. 

 286. — Stabks, Fishes from Ecuador and Peru, Proc. U. S. Nat. Mus., vol. 

 30, 1906, p. 772 ; Callao and Eten, Peru, and Santa Rosa, Ecuador. 



Seven specimens, field No. 267, 7.8 to 13.9 cm. in length, and five 

 specimens. No. 270, 5.2 to 7 cm. in length, from the Rimac River 

 below Lima. 



Four specimens, field. No. 457, 10.7 to 12.7 cm. in length, from 

 Lima market; two, field No. 09430, 5.8 and 7 cm. in length, from 

 Pacasmayo ; and three, field No. 322, 9.3 to 10.3 cm. in length, from a 

 " pozo " a little short of half-way between Amotape and Tumbes. 



Head 3.42 to 3.88 in length ; depth 3.35 to 3.6 ; eye 5 to 6.4 in head ; 

 snout 4 to 4.15; interorbital 3 to 3.22; D. 9 or 10; A. 11 or 12; scales 

 25 or 26. 



Body robust, head short, evenly rounded; teeth tricuspid; fins 

 evenly rounded, longest dorsal ray 1.68 to 2 in head ; base of dorsal 

 3 to 3.27; longest anal ray 1.85 to 1.92; base of anal 2.1 to 2.4; pec- 

 toral 1.38 to 1.45 ; ventral 1.68 to 1.71 ; origin of dorsal slightly be- 

 hind origin of ventrals. 



Color in alcohol of Lima market specimens, back plumbeous, sides 

 tinged with yellow, ventral surface yellow ; scales on sides of body 

 with yellow centers and dnsky edges, these forming horizontal rows; 

 a round black spot at base of caudal; a very indistinct trace of a 

 black lateral band and a dark spot behind opercle. In the indi- 



