FISHES OF MINNESOTA 65 



the pectoral fins. Body elongate, more cylindrical than S. vitreum; 

 head depressed, pointed; opercular spines few and not Tery promi- 

 nent. Head contained SJ times in the length. Depth 4^ to 6. Eye 

 5 in the head. Dorsal fln XI to XV-1, 17 to 19^ Anal II, 11 or 12. 

 Scales 9-100 to 125-127. Pyloric cseca 4 to 7, unequal and shorter 

 than the stomach. Length 10 to 18 inches. The variety griseum 

 differs from the typical canadense, which it is supposed is found 

 only farther east, in having fewer and less developed opercular 

 spines and the head more naked. It seems that this species is 

 much less abundant than S. vitreum. 



Specimens were described from Lake Pepin as Luciopterca pepi- 

 nus Estes (Hallock's Sportsman's Gazette, 322, 1877) ; a few speci- 

 mens have been taken in the Big Gull Lake and Mayo Greek, a tribu- 

 tary of the same (ISTat. Hist. Surv., 1893). 



The representative of the genus Stizostedion needs some careful 

 study and the Nat. Hist. Surv. will be glad to get any reliable in- 

 formation on the subject. 



Genus PERCA (Artedi) Linnaeus. 



Perca flavescens (Mitchill). Yellow Percb. American Pejreh. Ringed Perch. 

 Baccoou Perch. 



General color yellow; dark, sometimes quite black, on the back; 

 six or eight dark cross bars on the sides; upper fins rather dark; 

 lower fins orange, sometimes tinged with red. Body elongate, 

 compressed; back elevated; mouth rather large; maxillary reach- 

 ing nearly to the middle of the eye; snout a little longer than the 

 width of the eye. Gill-rakers X-i-15. Head 3^ in the length. Depth 

 3|. Dorsal fln XIII to XVII, 13 to 15. Anal II, 7 or 8. Scales 

 7-74 to 88-17; cheeks covered with scales, opercles nearly naked. 

 A spine on the posterior edge of the opercle, preopercle strongly 

 serrated. Upper jaw protractile; jaws, vomer and palatines set 

 with moderate teeth. Branchiostegal rays 7; pyloric caeca 3. 

 Length 12 to 15 inches. 



This well known flsh is found in all the waters of the state and 

 generally in abundance. So common is it that specific notes con- 

 cerning its distribution are here .omitted. 



Genus PERCINA Haldeman. 



Percina caprodes (Rafinesqne). Log Perch. Rock-fish. Hog Molly. Hog-fish. 



The zebra-like markings on the sides, which are black stripes 



on a yellowish background, at once distinguish this darter from 



all the others. Sides With about 15 dark stripes, these alternating 



