FISHES OP LAKE SUPERIOR. 367 



The dorsal is situated exactly on the middle of the whole length, 

 somewhat farther back than in Cr. cataractce ; it is higher than long. 

 The caudal is notched ; its lobes are pointed. The anal is somewhat 

 smaller than the dorsal, but it has the same form. The ventrals, 

 situated somewhat in front of the dorsal, are rounded on their cir- 

 cumference. The pectorals are narrower than these latter ; they 

 are also more elongated and more rounded on their circumference ; 

 their form is oblong. 



Br. 3 ; D. L, 9 ; A. L, 9 ; C. 5, L, 9, 8, L, 4 ; V. II., 8 ; 

 P. 16. 



The scales are large ; we can scarcely count sixty rows from the 

 gills to the caudal ; somewhat oblong on the sides, they are subcir- 

 cular on the back and belly. We readily perceive with the magni- 

 fying glass the concentrical and radiating strice. The lateral line is 

 deflected on the abdomen into an open curve, and recovers its direct 

 line beyond the dorsal, towards the tail. It is almost central in its 

 whole course. 



The head, the back, and the upper half of the sides are ash-gray. 

 A narrow lead-colored band extends along the upper side of the lat- 

 eral line. The abdomen is yellowish white, interspersed with small 

 gray points on the scales. The lower side of the head and belly is 

 of a uniform color. The dorsal, caudal, and pectorals are gray, the 

 ventrals and the anal yellow. The largest specimens of this species 

 are from Lake Superior. We have also a few from Lake Huron. 



I am well aware that the position of this species in the genus Gobio 

 is not natural, as it has neither the particular cut of the outline of 

 the head which characterizes the European species of Gobio, nor 

 their narrow dorsal, nor their projecting barbel, nor their pharyngeal 

 teeth, but I am unwilling to establish a new genus for it before I 

 have organized the American Cyprinidne more extensively. I will 

 only add that were it not for the barbel this species might be very 

 properly placed in the genus Leuciscus. But the European Leucisci 

 have not rudiments of such appendages on the sides even of the 

 mouth ; while all the species of Cyprindo of North America, which 

 have been referred to the genus Leuciscus, have, as far as I know, 

 such short barbels. I am therefore inclined to believe that these 

 species will have to be removed from that genus, Leuciscus, and 



