108 BULLETIN" 95, UNITED STATES NATIONAL MUSEUM. 



The paratype has the head 3.4 in length; depth 4.25; eye 6 in 

 head ; snout 3.5 ; maxillary 3.5 ; interorbital 3 ; i3ectoral 1.4 ; ventrals 

 1.82; D. XII, 23; A. I, 9; scales 12-70-20. 



This species has been named in honor of Dr. Kobert E. Coker, 

 who made important studies of the fishery resources of Peru, in con- 

 nection with which he made the collections of fishes which form the 

 basis of the present paper. 



Genus POLYCLEMUS Berg. 



137. POLYCLEMUS PERU ANUS (Steindachner). 



COCO. 



Genyanemns peruanus Steindachner, Iclith. Beitr., vol. 2, p. 29, Sitz. Akad. 



Wiss. Wien, 1875 ; Paita ; Callao. — Abbott, Marine Fishes of Peru, 



Proc. Acad. Nat. Sci. Phila., 1899, p. 357. 

 Polycirrhus peruanus Jordan and Eigenmann, Rev. Sciaenidae, Rep. U. S. 



Fish Comm., 1886 (1889), p. 415. 

 Polyclemns peruanus Starks, Fishes from Ecuador and Peru, Proc. U. S. 



Nat. Mus., vol. 30, 1906, p. 796. 



One example, field No. 09734 (=09112), 39.5 cm. long from Callao, 

 taken with gill net, fishing in the surf at La Ventanilla, between 

 Ancon and Callao. 



Head 3.35 in length ; depth 3.35 ; eye 6.4 in head ; snout 3.42 ; maxil- 

 lary 3; interorbital 2.75; pectoral 1.23; D. XI, I, 26 (25^) ; A. II, 8; 

 scales 7-60-16. 



Body elongate, back strongly arched; ventral profile nearly 

 straight ; head short, stout, depressed on snout and over eye, becom- 

 ing strongly compressed on nape to origin of dorsal; interorbital 

 space very broad ; upper profile of head slightly concave, region over 

 nape, convex; snout very blunt, projecting little beyond the maxil- 

 laries ; mouth moderate, horizontal ; maxillary reaching to below pos- 

 terior border of pupil; border of preopercle with small, well-devel- 

 oped serr£e; a tuft of slender barbels as long as diameter of pupil, at 

 chin, those along inner edge of dentary bones separated by short 

 interspaces; fourth dorsal spine longest, 2.76 in head; soft dorsal 

 long and low, reaching to within a distance equal to length of snout 

 from origin of caudal; caudal S-shaped; anal high, the longest ray 

 2.13 in head; ventrals long, their tips reaching halfway from base 

 to third anal ray; pectoral broad, longer than ventrals, 1.25 in head; 

 gillrakers short, less than diameter of pupil in length, covered with 

 spinules, 6+10; scales strongly ctenoid; spinous dorsal fitting into a 

 groove between scales; soft dorsal and anal with a scaly sheath at 

 base ; membranes of caudal scaled ; a small patch of scales at base of 

 pectoral. Color in alcohol, olivaceous, with traces of several dusky 

 crossbands, most distinct under arched portion of lateral line. 



This species has been recorded only from the coasts of Peru. 



