20 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. Ill 



This species probably is nearest E. acuminatus (Bloch and 

 Schneider) from the Atlantic, from which it differs prominently in 

 the much smaller scales. From the other two species, E. viola 

 (Gilbert) and E. fuscovittatus (Kendall and Radcliffe), known from 

 the Pacific coast of America, it differs in color and in the lower 

 spinous dorsal. 



Range. — Known only from off Talara, Peru. 



Family CHAETODONTIDAE : Butterflyfishes, Angelfishes 

 Genus HOLACANTHUS Lecepede, 1803 



Body oblong, rather robust, the depth usually about equal to half 

 the total length ; back round ; head short, blunt ; preopercle serrate 

 along vertical margin, with a large spine at angle, preceded by i to 3 

 spines in lower margin of preopercle; interopercle anteriorly with 

 I to 4 short spines ; preorbital anteriorly with coarse serrae ; scales 

 firm, strongly serrate, fluted, accessory scales generally present; 

 dorsal with about 12 to 15 spines; soft part anteriorly sometimes 

 elevated; anal with three graduated spines, the soft part similar to 

 that of dorsal. Color usually brilliant. 



The genus is now reported from Peru for the first time. 



HOLACANTHUS PASSER Valenciennes 



Holacanthus passer Valenciennes, 1855, P- 32/, Galapagos Islands (original 

 description ; figure published in atlas, 1846, as plate 6) ; Jordan and Ever- 

 mann, 1898, p. 1682 (description) ; Meek and Hildebrand, 1928, p. 778 

 (description; range). 



Holacanthus strigatus Gill, 1862, p. 243, Cape San Lucas, Baja California 

 ( original description ) . 



Head 4.0; depth 1.65; D. XIV, 19; A. Ill, 19; P. 17; scales along 

 middle of side 46. 



Body short and deep, well compressed, its ventral profile anteriorly 

 strongly convex, its dorsal profile slightly concave over eyes, steep 

 at nape ; caudal peduncle short, strongly compressed, 1.6 in head ; head 

 short, deep; snout blunt, 2.6; eye small, 4.5; mouth small, terminal; 

 maxillary under preorbital, reaching about to vertical from anterior 

 nostril, 3.3 in head ; teeth in jaws, slender, bristlelike, movable, mostly 

 in 2 series ; preopercle with a rather finely serrate vertical margin, at 

 angle, a large spine exceeding diameter of eye, preceded on lower 

 margin by 3 smaller spines; interopercle anteriorly with 2 spines; 

 preorbital anteriorly coarsely serrate; gill rakers short, 12 somewhat 

 developed on lower limb of first arch ; lateral line pores undeveloped ; 

 scales strongly ctenoid, fluted, mostly with accessory scales at base, 

 extending forward on snout and chin, covering soft parts of the 



