FISHES OF WEST COAST OF PERU. 93 



maxillary groove broad, oval ; dorsal spines high, slender, fin falcate ; 

 dorsal and anal fitting into a scaly sheath ; second anal spine longest, 

 1.5 in head, considerably stronger than the third which is very slen- 

 der, fin falcate; ventrals reaching midway between vent and origin 

 of anal; pectorals as long as head, reaching vertical from origin 

 of anal. 



Color in alcohol : Silvery, fins dusky. 



Description based on a small specimen 10.5 cm. in length from 

 Capon. 



122. GERRES PERICHE, new species. 

 PESICHE, 



Plate 8, fig. 3. 



Head 2.8 in length; depth 2.16; eye 3.97 in head; snout 2.97; 

 maxillary 2.54; interorbital 3.5; pectoral 1.09; D. X, 9; A. Ill, 8; 

 scales 6- (+3) -11. 



Body short, deep, moderately compressed; snout blunt, consid- 

 erably longer than horizontal diameter of eye ; premaxillary groove 

 very broad, without scales; mouth moderate; maxillary reaching 

 vertical from anterior border of pupil ; premaxillary groove reaching 

 below middle of eye; teeth small; upper profile of head concave; 

 interorbital broad; cheeks and opercles scaly, the scales on opercles 

 large; several small scales on preopercle; preorbital and preopercle 

 serrated, serrations on the preorbital weak. 



Dorsal spines strong, the second longest and strongest, 1.67 in 

 head ; no notch between the dorsals, only 8 rays apparent above the 

 broad scaly sheath of the dorsal, the third ray partially aborted; 

 dorsal forked (lobes broken) ; second anal spine long and strong, 2.04 

 in head, the third longer but much slenderer, 1.98 in head; tips of 

 ventrals reaching midway between vent and origin of anal; ventral 

 spine stout, compressed, knife-like, 2.22 in head ; pectorals long, fal- 

 cate, their tips reaching vertical from origin of anal; scales large, 

 heavy, regular in arrangement; lateral line curved, parallel with 

 dorsal outline; 34 pores on fully developed scales of lateral line, 4 

 pores on smaller scales at base of caudal ; a wide scaly sheath on base 

 of dorsal and anal; the width 2.31 in eye. 



Color in alcohol: Silvery, tinged with yellow, a black line along 

 each row of scales above base of pectoral, about 9 of these black 

 lines ; no black area in axil of pectoral. 



This species resembles G. lineatus. From specimens of G. Uneatus 

 from San Juan Lagoon in the United States National Museum it 

 differs in having a longer head ; snout longer than eye ; pectoral not 

 as long as head; smaller scales; and the black lines along the rows 

 of scales more pronounced. The back is not quite as strongly arched 



