NO. 10 FISHES FROM PERU HILDEBRAND AND BARTON 1 5 



sechurae are larger. The snout was described as a little longer than 

 the eye in sechurae and as shorter than the eye in gordensis. The 

 teeth on the tongue were described as granular and as in a "consider- 

 able patch" in sechurae, and as blunt, few and scattered in gordensis. 

 According to the figures the lobes of the caudal are pointed in sechurae 

 and about as long as the head without the snout, whereas they are 

 rounded and almost as long as the head in gordensis. Although the 

 number of anal rays was given as equal in the two species, the illus- 

 trations show the base to be shorter than the soft dorsal by 5 rays in 

 sechurae, and by only 2 rays in gordensis. Furthermore, the mouth 

 is shown as notably more oblique in sechurae than in gordensis. In view 

 of these several apparent differences the two may be regarded as 

 distinct at least until further evidence is obtained. 



This species, as well as A. gordensis, differs from A. aspcrilinguis 

 from the Atlantic coast of South x^merica in having a more elongate 

 body, smaller scales, longer snout, smaller eye, and in the absence of 

 filaments on the outer rays of the caudal. 



Range. — Known only from the vicinity of Talara, Peru. 



Family PRIACANTHIDAE : Bigeyes 



Body oblong, or ovate, compressed ; head short, deep ; snout short ; 

 eye very large ; mouth large, oblique ; lower jaw projecting ; teeth in 

 jaws in villiform bands, present also on vomer and palatines; pos- 

 terior nostril large, elongate ; preopercle serrate, with i or more spines 

 or enlarged serrations at angle; opercle short, with i to 3 points or 

 spines ; lateral line complete, not extending on caudal fin ; scales firm, 

 ctenoid, extending on head, snout and maxillaries, but not on the 

 fins; dorsal fin continuous, with about 10 spines; anal with 3 spines; 

 ventrals thoracic, with I, 5 rays. 



Two genera, Priacanthus and Pscudopriacanthus, occur in Ameri- 

 can waters, which have not heretofore been recorded from Peru. 

 The last mentioned genus is represented by a fine specimen in the 

 collection from Talara, Peru. 



Genus PSEUDOPRIACANTHUS Bleeker, 1869 



Body very deep, its depth usually equal to or greater than half its 

 length to the base of caudal ; scales moderately large, about 35 to 55 

 in a lateral series; dorsal with about X, 10 or 11 rays; anal with 

 about III, 10 or 11. 



This genus, which occurs in the Atlantic and Pacific, is new to the 

 fauna of Peru. 



