FISHES PERCIDAE STIZOSTEDION BOREUS. 



31 



latter are less regular than the former ; all being, however, wider than the stripe which follows 

 the course of the lateral line. 



References to the figures. Plate XI, fig. 1, represents Larax chrysops, somewhat reduced in 

 size. Fig. 2 is a scale from the dorsal region. Fig. 3, a scale from the lateral line. Fig. 4, a 

 scale from the abdominal region. 



List of specimens . 



STIZOSTEDION, Rafin. 



GEN. CHAR. Body elongated, slender, sub-cylindrical, slightly compressed. Head well developed. The preopercle is den 

 ticulated or serrated upon its edge ; a flattened spine or two, towards the upper region of the opercle. Mouth large ; jaws 

 sub-equal. Canine teeth upon the jaws, front of vomer iand palatine bones. Tongue smooth. Cheeks and opercular 

 apparatus entirely or partially scaly. Branchial apertures continuous under the throat. Two dorsal fins entirely separated ; 

 anterior one spinous ; anal fin without spiny rays Ventrals inserted posteriorly to the base of pectorals. Caudal fin pos 

 teriorly crescentic. Scales of moderate development, strongly pectinated, and rough to the touch. 



S\-x.Stizostedion, RAFIN. Ichth. Ohiens. 1820, 23. 

 Ludoperca, Cuv. Regn. Anim. 2d ed. II, 1829. 



It is to be regretted that such a handsome name as Ludoperca should be superceded by that 

 of Stizostedion. 



This genus includes fishes of voracious habits, and growing sometimes to a very considerable 

 size. Its species are not numerous, although widely spread over the cold part of the temperate 

 zone. 



The common appellations of pike-perch, salmon, sandre, &c., are applied to the various species 

 which are brought to our markets, and served upon our tables. 



STIZOSTEDION BOEEUS, Grd. 



Okow, or Horn Fish. 



PLATE XI, FIGS. 58. 



SPEC. CHAR. Body slender, elongated, and sub fusiform. Snout conical ; mouth deeply cleft; posterior extremity of 

 maxillary bone extending to a vertical line drawn posteriorly to the orbit. Scales on cheek and opercle not deciduous, 

 larger upon the opercle than upon the cheek. Insertion of ventral fins situated posteriorly to the base of pectorals, and 

 somewhat anteriorly to the origin of first dorsal. Posterior margin of caudal crescent shaped. Anus situated opposite tae 

 origin of the second dorsal fin. Yellowish or olivaceous, spotted with black. 



STN. Ludoperca borea, GRD. Poc. Acad. Nat. Sci. Philad. November, 1857. 



Okow, CUBES, 



JPlS/l, FUR TRADERS, ) 



ElGIIAEI)g . Faun&amp;lt; Bor . Amer . HI, 1836, 14. 



This species, though closely allied to its congeners, is nevertheless distinguishable by the 

 gape of its mouth, which is proportionally greater, since the posterior extremity of the maxil- 



