FISH OF OXTAKIO. 41 



(40) Straw-colored Minnow. 



(Xotropis bicnnius.) 



Body slender, elongate, its greatest depth one-fifth of total length 

 without caudal; head rather large; eye large; mouth small, inferior, hori- 

 zontal, snout very obtuse. Scales, 5 to 6-32 to 38-4. D., 8 to 9 ; A., 7 to 8. 



Colour pale, olivaceous; sides usually pale, usually a darker dorsal 

 band and a small dark blotch before dorsal, sometimes a plumbeous lateral 

 stripe, but no caudal spot ; fins all plain. Length about two and a half 

 inches. 



Range from the upper vSt. Lawrence through the region of the Great 

 Lakes. Lake of the Woods (Evermann and Goldsborough). 



(41) Notropis volucellus. 



Body moderately stout. Head depressed, the snout rather long. Fins 

 more elongate than in most related species, the pectorals reaching ventrals. 

 Caudal peduncle slender. 



D., 8; A., 8; scales, 4-34-3. 



Colour, olivaceous, a slight dusky lateral shade ; no dorsal stripe , 

 fins plain. Length, two and a-half inches. 



This species has been found in the Detroit Rivei. I have no othei. 

 records from our waters. 



SiRGEMs HUDSONIUS. 



(42) Spawn-eater. Smelt. 



(Xotropis hudsonius.) 



Body moderately elongate, compressed. Head conical, with short, 

 blunt snout; mouth small, nearly horizontal, the lower jaw very slightly 

 the shorter. The lateral line is slightly curved downward over the pec- 

 toral, straight and median for the rest of its course. Caudal large and 

 deeply forked. Its middle rays half as long as the outer. Scales, 7-38-5. 

 Teeth, 2, 4-4, i or 2, with a narrow grinding surface on at least two. 



D., 8; A., 8 or 9; v., 8; P., 14. 



Colour, pale olive, young always with a round black spot at base of 

 caudal; sometimes a dark lateral band; fins unmarked. Length, ten 

 inches. 



Common and generally distributed in the lakes and larger streams 

 from the upper St. Lawrence to Lake Superior. The northern form of 

 Lake Superior is XF. h. selene. 



Subgenus CVPRIXELLA. 



(43) Silverfin. 



(Notropis whipplii.) 



Body moderately elongate, fusiform in the adult. Caudal peduncle 

 short and stout. Head conical, compressed, snout pointed. Mouth mod- 



