salmonoidejE. 203 



Dimensions. 



Inches. Inches. 



Length from tip of snout to base of central caudal Length of alimentary canal . . . . 11£ 



rays ........ 14 ,, from gullet to pylorus . . . 2| 



„ anus ..... 1 1J „ pylorus to anus .... 9 



Greatest depth of body ..... 4J 



[77.] 3. Salmo (Coregonus) Artedi. (Le Sueur.) Le Sueur s 



Herring Salmon. 



Coregonus Artedi. Le Sueur, Journ. Ac. Se. Phil., i., p. 231. 



This species having been taken in Lake Erie and the Niagara River, requires 

 to be noticed in this work. M. Le Sueur says that it is locally known by the name 

 of Herring-salmon, and is considered to be very delicate food. As it did not fall 

 under our notice, we shall transcribe the description given of it by its discoverer. 



DESCRIPTION 

 Quoted from M. Le Sueur. 



" Body sub-fusiform, a little elevated at the back; head small, having an osseous radiated 

 plate which is covered by the skin ; snout pointed." — " In form this species approaches the 

 scombri, a section of it is oval. Head small and narrow ; snout short, terminated by small 

 intermaxillaries ; maxillaries wide, sharp-edged as in the herring, edges entire ; mandibles 

 carinate, producing inwardly a triangular pedunculate expansion ; very small conical teeth 

 inserted in the skin of the lips at the extremity of the jaws : these teeth were sufficiently mani- 

 fest in a small individual, but not visible in a larger one, a female, which came under my 

 observation. Rays in the osseous plate of the head tubular, and open at the exterior, some 

 tending backwards, and others towards the end of the snout, A faint carinate line divides the 

 top of the head in the dried specimen. Lateral line straight and near the middle ; nostrils 

 double, close to the end of the snout and articulation of the maxillaries ; scales round, ap- 

 proximated, easily falling off; the base of the tail is covered with them. Colour ash-blue at 

 the back, paler and silvery on the rest of the body, with yellow tints on the tail, head and 

 dorsal ; iris whitish, pupil black. Length ten to twelve inches. 



« Fins.— Br. 9 ; P. 16; D. 12—0 ; V. 12 ; A. 13 ; C. — f " 



M. Le Sueur, in comparing our Attihawmeg, or his Coregonus albus, with C. Artedi, says 

 that it has a less fusiform body, and the back elevated from the nape to the dorsal. " The 

 C. albus,^ he further states, " has mere depth of body, a greater elevation of back, and much 

 stronger proportions in its body, fins, and scales. The adipose fin, which is broad, appears to 

 consist of delicate rays, much pressed and in pairs." A careful examination of the dried speci- 

 mens of our C. albus from Lake Huron, exhibited no rays whatever, nor any interspinous 

 bones to support them, but the fin in drying splits in a fibrous manner. 



2d 2 



