THE SHORE FISHES OF PERU 257 



Head 2.9; depth 2.9; D. XIII, 12; A. Ill, 7; P. 16; scales 50. 



Body moderately compressed, its greatest thickness about half its 

 depth; back moderately elevated; profile over head convex; ventral 

 outline in advance of anal gently convex; head moderately deep, com- 

 pressed; snout rather long and blunt, 3.0 in head; eye large, quite 

 elongate, 3.3; interorbital 4.9; preorbital 6.3; mouth little oblique, 

 about terminal; maxillary reaching nearly opposite front of eye, 3.75 

 in head; teeth villiform, in a band in each jaw, the outer ones in upper 

 jaw very slightly enlarged; vertical margin of preopercle serrate, the 

 serrae at angle somewhat enlarged, horizontal limb mostly smooth; 

 gill rakers slender, shorter than pupil, 10 more or less developed on 

 lower and 5 on upper limb of first arch; scales firm, strongly serrate, 

 including those on interorbital, five complete horizontal rows between 

 lateral line and base of first dorsal spine, three between lateral line 

 and base of first soft ray of dorsal; dorsal rather deeply indented, the 

 fourth spine longest, 1.6 in head; second anal spine much longer than 

 the third, but not as strong as in some related species, reaching slightly 

 beyond tips of longest soft rays, 1.55 in head; ventral inserted under 

 base of pectoral, the spine fairly slender, 2.1 in head; pectoral long, 

 pointed, the fifth ray (counting downward) longest, reaching beyond 

 tip of ventral, to vertical from vent, 1.05 in head, 3.1 in length. 



Color of old preserved specimen brownish above; paler and slightly 

 silvery below; fins brown; membrane behind tip of each dorsal spine 

 black. 



The description is based on the same specimen (U.S.N.M, No. 

 77603), about 180 mm. (143 mm. to base of caudal) long, reported by 

 Evermann and Radcliffe (1917, p. 86) from the vicinity of Tumbes. 

 It was compared with specimens from Panama and Mazatldn, with 

 which it agrees almost completely. This species is recognized by the 

 large, elongate eye and the very rough scales on upper surface of head. 



Range. — From about Mazatlan, Mexico, to northern Peru. 



POMADASYS SCHYRI Steindachner 

 RONCADOR 



Pomadasys schyri Steindachner, 1902, p. 115, pi. 4, fig. 1, Guayaquil, Ecuador 

 (original description; compared with panamensis and macracanthus. — Ever- 

 mann and Radcliffe, 1917, p. 85, Tumbes, Peru (description, based on one 

 specimen) . 



Head 2.65; depth 2.7; D. XII, 13; A. Ill, 7; P. 16; scales 47. 



Body quite compressed, its greatest thickness less than half its 

 depth; back high and narrow; profile over head nearly straight; ventral 

 outline in advance of anal gently convex; head deep, compressed; 

 snout long, pointed, 2.9 in head; eye moderate 4.6; interorbital 5.3; 

 preorbital 4.75; mouth slightly oblique, terminal; maxillary failing to 

 reach eye, 3.4 in head; teeth in a band in each jaw, villiform, all of 



