THE SHORE FISHES OF PERU 173 



body, which in specimens from the Galapagos Islands and from 

 Panama are more distinct, and in some individuals are distributed 

 over the entire body. 



The description is based on a single specimen (U.S.N.M. No. 77627), 

 which is 220 mm. (176 mm. to base of caudal) long, and was taken at 

 Lobos de Afuera by R. E. Coker. It is one of the two specimens 

 reported by Evermann and Radcliffe (see reference above). It was 

 compared with specimens from the Galapagos Islands and from 

 Panama Bay, with which it agrees, except for the rather smaller eye, 

 shorter snout, and generally plainer color. In two specimens from 

 Panama, 190 and 245 mm. long, and one from the Galapagos, 150 mm. 

 long, the eye is contained in the head respectively 5.0, 5.2, and 4.9 

 times, and the snout 3.9, 3.6, and 4.2 times. These differences prob- 

 ably arc not of specific importance. 



It is stated in the report of the Mission (1943, p. 280) that "several 

 specimens were taken at the Lobos Islands with the trammel net." 

 These fishes apparently were not preserved. The species according 

 to the report cited is of limited commercial importance at least at 

 Lobitos and Negritos. 



Range. — Gulf of California to the Galdpagos Islands and northern 



Peru. 



Genus HEMILUTJANUS Bleeker, 1876 



Body rather deep, compressed; head compressed, pointed; mouth 

 large, oblique; lower jaw projecting; maxillary broad, with a distinct 

 supplemental bone; teeth villiform, in bands on jaws, vomer, and 

 palatines; preopercular margin serrate, the serrae somewhat enlarged 

 at and in front of angle; gill rakers rather long, about 20 on lower limb; 

 lateral line complete, following general contour of back; scales rather 

 small, ctenoid, extending on snout, maxillary, and mandible; dorsal 

 with 10 spines and about an equal number of soft rays; caudal emargi- 

 nate; anal with 3 strong graduated spines and about 9 soft rays; 

 ventrals inserted a little behind base of pectorals; a dark streak along 

 lateral line. 



A single species is known. 



HEMILUTJANUS MACBOPTHALMOS (Tschudi) 



Ojo de uva; Papanoya 



Pledropoma macropthalmos Tschxjdi, 1845, p. 6, Lurin, Peru (original description)* 



Hemilutjanus macropthalmos Jordan and Eigenmann, 1890, p. 345 (description; 



synonymy; range). — Evermann and Radcliffe, 1917, p. 67, Ballestas Island, 



Chincha Island, Callao, Mollendo, and Paita, Peru (synonymy; description). 



— Nichols and Murphy, 1922, p. 508, North Chincha Island, Peru (note). 



Head 2.4 to 2.5; depth 2.25 to 2.5; D. X, 10 or 11; A. Ill, 9; P. 16 

 to 18; scales 108 to 115. 



Body deep, compressed, its greatest thicloiess notably less than 

 half the depth; back high; profile from snout to nape straight or slightly 



