FAMILY PERCIDAE 217 



are smaller and more numerous than in Hadropterus maculatus and 

 are quadrate in form. There is a small dark spot on each end of the 

 lateral line. This species reaches a length of 3 to 4 inches. 



The slenderhead darter ranges from Iowa and eastern Minnesota to 

 western Pennsylvania, and southward to Oklahoma and Tennessee. It 

 is rare in Minnesota and is apparently confined to the Mississippi drain- 

 age in the eastern limits of the state. Greene (1935) reported it from the 

 upper St. Croix River, from the Mississippi below Lake Pepin, and from 

 several large tributaries of the Mississippi and of Lake Michigan in 

 Wisconsin. Forbes and Richardson (1908) state that they found this 

 darter most abundant in smaller rivers and creeks, but only rarely in 

 large rivers and lakes. They found females greatly distended with eggs 

 in June. This darter prefers swift water with bottoms of sand and gravel. 



GILT DARTER 



Hadropterus evides (Jordan and Copeland) 



The body of the gilt darter is stout and compressed. The heavy head 

 is blunt forward, with a small mouth; the maxillary reaches the eye, 

 which is large. The scales number 9-65-9. The cheeks, nape, and breast 

 are naked. The dorsal fin has 11 spines and 11 soft rays, the anal fin 2 

 spines and 8 rays. The color and markings are dark olive and the mark- 

 ings are tessellated above. The back has 7 broad transverse bars extend- 

 ing below the lateral line. These bars in the male are deep blue green, 

 the interspaces are yellow with copper-red blotches. The throat, cheeks, 

 upper fins, and the two spots at the base of the caudal fin are orange; 

 the anal and ventral fins are blue black. This species reaches a length of 

 3 inches. 



The gilt darter ranges from southern Minnesota to New York and 

 southward to Oklahoma and Tennessee. It is absent from most of the 

 Great Lakes drainage. Greene (1935) reported the gilt darter from the 

 St. Croix River both above and below the St. Croix Falls and stated 

 that it appears to be rather rare in Wisconsin. It prefers swift streams. 



GENUS Percina Haldeman 



NORTHERN LOGPERCH (Zebra Fish, Manitou Darter) 

 Percina caprodes seraijasciata (De Kay) 



The body of the northern logperch (Figure 40C) is elongate. The 

 head is broad between the eyes and has a pighke snout projecting be- 

 yond the inferior mouth. The scales are small; there are about 92 in the 

 lateral line. They number 9-11, 83-93, 12-14. The cheeks and opercles 

 are scaly; the breast is naked. The dorsal fin has 15 spines and 15 soft 

 rays. The anal fin has 2 spines and 9 soft rays. The color and markings 



