FISHES OF WEST COAST OF PEEU. 119 



longest, 2.13 in head; soft dorsal considerably higher than spinous 

 portion, rather acute, the middle rays elongate, longest rays 1.65; 

 second anal spine long and stout, 1.94, anal rounded, not so acute as 

 soft dorsal, longest rays 1.86; caudal deeply emarginate, the upper 

 lobe slightly longer than lower, equal to head in length; ventrals 

 elongate, reaching past vent and in some specimens to base of anal, 

 1.35 ; pectoral broad, longer than head .9 in head ; scales large, regu- 

 lar, strongly ctenoid, densely covering entire body and head except 

 anterior border of snout; lateral line well developed, arched, fol- 

 lowing contour of back to within two scales of base of dorsal, where 

 it ceases ; fins scaled at base, those on spinous dorsal largest. 



Color in alcohol, bluish black on back, scales on sides with a cen- 

 tral area of silver, margin dusky ; approaching the ventral surface, 

 the silver area increasing in size until it covers all of the scale except 

 a narrow marginal line; scales more or less punctulate with dusky; 

 dorsal blackish ; caudal dusky white ; anal blackish ; ventral blackish, 

 mottled with light; pectoral silvery translucent, base iridescent 

 bluish, darkest in upper angle. Description based chiefly on a speci- 

 men 17.5 cm. long from Mollendo. 



The individuals from Santa Rosa Island are dark brown, quite 

 uniform in coloration, but showing some traces of the silvery central 

 areas to scales in places; caudal and pectoral darker; iridescent blue 

 base of pectoral very distinct. 



Color in life of field No. 09144, back and sides dusky above, sides 

 lighter ; scales with dusky margin, light within ; belly and lower part 

 of sides silvery; membrane between rays of pectoral very trans- 

 parent ; some specimens much lighter than others. 



This species is known under a considerable number of common 

 names; our specimens from Callao were called "Chavelita"; at 

 Santa Rosa, " Conguyo " ; at Mollendo, " Juniche." Abbott records 

 individuals from Callao under the names " Cognito " or " Con- 

 quito," and Delfin states that the names " Castaneta," "Boquilla," 

 " Frailecito " and " Pampanito " are applied to this species by fisher- 

 men on the coasts of Peru and Chile. 



147. CHROMIS INTERCRUSMA, new species. 



OHAVELITA. 



Plate 11, fig. 3. 



Heliases crusma Cuvieb and Valenciennes (part). Hist. Nat. Poiss., vol. 

 9, 1833, p. 377 (510) ; Juan Fernandez Island (not the types from 

 Valparaiso).— Gay, Hist. Chile, Zool., vol. 2, 1848, p. 206 (part). 



Type.— Cat. No. 77590 U.S.N.M. (field No. 09403), a specimen 15 

 cm. long from Guanape North Island. 



One specimen, field No. 09457, 13.1 cm long, and three specimens, 

 field No. 09445, 7.8 to 8.7 cm. long, from Lobos de Afuera. 



