JULY, 1902. COLD-BLOODED VERTEBRATES FROM ONTARIO. 135 



Leuciscus neogaeus (Cope). 



Ten specimens of this species were taken at Hawkstone. 



Rhinichthys atronasus (Mitchill). Black-nosed Dace. 



Common at Hawkstone. Three specimens were also taken at 

 Sault Ste. Marie. 



Rhinichthys cataractae (C. & V.). Long-nosed Dace. 



Less common than the preceding. Hawkstone; Sault Ste. 

 Marie. 



SALMONID.E. 



Coregonus quadrilateralis (Richardson). Menominee. 



A very abundant species at Sault Ste. Marie and the Lizard 

 Islands. 



Coregonus clupeiformis (Mitchill). Common Whitefish. 



This species is very abundant at the Lizard Islands, where it 

 is taken in large numbers for the market. 



Two specimens, which we identify with some doubt as this 

 species, were taken at Chapleau. On these specimens we made 

 the- following notes: Head 4^ ; depth 3$; D. 10 or n; A. 10 or 

 ii; scales 11-80-9; eye large, its diameter 4$ in the head; snout 4; 

 maxillary 3; length of supplemental maxillary twice its greatest 

 depth; gill-rakers 25 or 26; distance from tip of snout to nape 3 

 in distance from tip of snout to the origin of the dorsal fin; 

 dorsal fin high, its longest rays I T % in the length of the head; 

 length of pectorals about' the same; ventrals a little shorter. 

 Body much compressed; shoulders with a moderate hump, mouth 

 moderate, the tip of the maxillary reaching vertical from anterior 

 margin of the eye; end of mandible reaching slightly past vertical 

 from middle of eye. 



Color very dark, the fins being nearly black. These speci- 

 mens differ from the typical C. clupeiformis in having longer head, 

 larger eye, larger scales, deeper body, and a much darker color. 

 Two specimens each 15 inches in length. 



This fish is reported as being very common at Chapleau. It, 

 with the pickerel (L. lucius) and the yellow perch (P. flaviscenf), 

 comprise the native food-fishes of this region. 



