202 BULLETIN 189, UNITED STATES NATIONAL MUSEUM 



distance about equal to diameter of pupil, pointed, 1.55 in head; 

 pectoral long, reaching well beyond tip of ventral, about opposite 

 origin of anal, the seventh and eighth rays longest (counting down- 

 ward), as long as head, 3.65 in length. 



Color uniform brown above shading into pale brown underneath; 

 fins mostly dusky brown; anal fin notably darker than adjacent parts 

 of body; inner surface of pectoral much darker than the exposed 

 surface, lower part of fin rather pale. 



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

 128051), 285 mm. (230 mm. to base of caudal) long, taken with a 

 trammel net set over rocky bottom in Lobos de Tierra Bay. This 

 specimen, which was furnished by the Mission, apparently is not 

 identifiable with any known species and accordingly becomes the type 

 of a new species. It is characterized by the absence of serrae on the 

 preopercular margin, except for a few blunt points at angle; the ventral 



Figure 44. — Caulolatilus afinis, new species. From the type, 285 mm. long, Lobos de 

 Tierra Bay, Peru (U.S.N.M. No. 128051). 



fins are inserted distinctly behind bases of pectorals, instead of below 

 them as in the other local species; the pectoral fins are longer, being as 

 long as the head; the maxillary is almost wholly covered by the lip, 

 whereas it is above the lip in related species; the head is lower, and 

 its upper profile is less steep, especially over snout and eyes; and the 

 caudal is differently shaped, the outer rays being curved inward, 

 and its posterior margin is more evenly lunate than in C. princeps, 

 and more deeply concave than in C. cabezon. 



Range. — Known only from Lobos de Tierra Bay, Peru. 



Family CARANGIDAE: Cavallas; Pampanos 



Body elongate to ovate, moderately to very strongly compressed; 

 occipital region usually with a compressed edge or keel; mouth vari- 

 able; premaxillaries usually protractile; maxillary with or without a 

 supplemental bone; teeth usually small, in one or a few series, rarely 

 in a narrow band in each jaw, occasionally wholly wanting in adults; 

 gills four, a slit behind the fourth; branchiostegals commonly seven; 



