THE SHORE FISHES OF PERU 



299 



middle of second dorsal, its base 4.5 in head; ventral inserted under 

 base of pectoral, failing to reach vent by a distance greater than di- 

 ameter of eye, only about halfway to anal, 1.4 in head; pectoral 

 moderately long, pointed, the third and fourth rays (counting down- 

 ward) longest, 1.15 in head, 3.6 in length. 



Color now quite dark. It was described by Evermann and Rad- 

 clift'e (see reference above), in part, as follows: "Back dusky; sides 

 yellowish; centers of scales dusky, forming dusky stripes along rows of 

 scales * * *^ becoming silvery on belly; fins dusky yellow; 

 axil of pectoral black; skin lining region around pseudobranchiae 

 black, this showing through opercle as a dark area." 



The description is based on a single specimen (U.S.N.M. No. 77694), 

 260 mm. (215 mm. to base of caudal) long, from Lobos de Tierra 

 Island, collected by R. E. Coker. This is the larger of two specimens 

 described by Evermann and Radcliff e (see reference above) as L. pacif- 

 icus. The second specimen, which was listed as from CaUao, cannot 

 now be found. The specimen at hand was compared with the type of 

 L. pacificus (U.S.N.M. No. 41168) from Panama Bay, 135 mm. (107 

 mm. to base of caudal) long, and was found to differ in having more 

 numerous gill rakers, apparently rather shorter ventrals, with fewer 

 scales between the base of ventral and origin of anal, and the scales 

 above the anterior part of the lateral line are less nearly parallel with 

 it and the rows are more numerous. The differences are shown in the 

 accompanying parallel comparison. A second specimen of L. pacificus 

 from the Gulf of California, 190 mm. (158 mm. to base of caudal) long, 

 also was compared, and found to differ from the Peruvian fish in the 

 same characters and to about the same degree as the type. The new 

 species is named gulosus in allusion to its large mouth. The common 

 name used was copied from Evermann and Radcltffe's account and 

 presumably was furnished by R. E. Coker. 



L. -pacificus 



20 gill rakers on lower limb, and 10 or 



11 on upper limb, of first arch. 

 Ventral fin reaching more than halfway 



to origin of anal. 

 20 vertical series of scales between base 



of ventral spine and origin of anal. 

 Scales above anterior part of lateral line 



parallel with it (though not true on 



one side of the type), 5 rows between 



lateral line and base of first dorsal 



spine. 



Range. — Known only from Peru, from a specimen from Lobos de 

 Tierra. A specimen recorded from Callao by Evermann and Rad- 

 cliffe (see reference above) very probably also was of this species. 



L. gulosus 



24 gill rakers on lower limb, and 12 on 

 upper limb, of first arch. 



Ventral fin reaching about halfway to 

 origin of anal. 



25 vertical series of scales between base 

 of ventral spine and origin of anal. 



Scales above anterior part of lateral 

 line not parallel with it, 6 rows be- 

 tween lateral line and base of first 

 dorsal spine. 



