210 



NORTHERN ZOOLOGY. 



longitudinally, the uncovered edge is a segment of a large circle, the base is rather angled, 

 or widely three-lobed. There are eighty-eight scales on the lateral line ; ten rows above that 

 line at the dorsal, eight between it and the ventral, and three or four from thence to the mesial 

 line of the belly. The scales on the sides are larger than those of the back ; a linear inch 

 includes six of them. The lateral line is straight and equidistant from the dorsal and ventrals. 

 Colour. — The scales have much pearly and iridescent lustre. In the dried specimen 

 the back is lighter than that of the other coregoni, and the sides of the head yield strong 

 greenish and golden reflections *. 







Dimensions 









Inches. 



Lines. 







from tip of lower jaw to tips of caudal 18 



4 



Length 



of lower jaw 



„ snout f to ditto 



. 18 







» 



lateral line . 



„ end of central rays 



17 









j 



attachment of dorsal 



„ end of scales 



. 16 









>} 



its longest rays 



„ anus 



. 12 









n 



its last ray 



„ ventrals . 



. 8 



H 





>3 



pectorals 



,, dorsal . 



7 



4i 





3 



ventrals . 



„ edge of gill-cover 



. 3 



1 





5 



their appendages , 



,, nape 



1 



11 





3 



attachment of anal 



„ orbit 



. 



«i 





„ 



its longest ray 



„ nostrils . 







34 





„ 



its shortest ray 



of intermaxillaries, vertically 



. 



24 





3 



lobes of caudal 



labials 







10* 





>3 



central rays of ditto 



space between articulations 



of ditto 



6 



Depth of caudal fork . 



Inches. 



Lines. 



1 



5 



13 



2* 



1 



n 



1 



9* 







H 



2 



n 



3 



01 







n 



1 



5 



1 



4 







6 



3 



4 







8 



1 



-3 



[81.] 7. Salmo (Coregonus) harengus. (Richardson.) Lake 



Huron Herring- Salmon. 



Plate 90, f. 2, A and B, one-half nat. size. 



This fish is plentiful at Penetanguishene on Lake Huron, but I am unable to 

 determine whether it be the same with the C. Artedi of Le Sueur, which we have 

 already noticed as an inhabitant of Lake Erie. Baron Cuvier's remark upon our 

 specimen was, " Espece nouvelle voisine des Coregones." It resembles C. lucidua 

 very nearly, its larger head, smaller scales, and a slight difference in the position of 

 its ventrals being the principal distinctive characters I have been able to detect in 

 the dried specimens. Having lost my notes of the dissections which I made of 

 C. lucidus, and having examined the recent specimens of C. harengus- only cur- 



* My notes of the appearance of the recent fish were lost, as I have stated above. 



-j- The articulations of the labials and intermaxillaries are considered as the end of the snout, not the edges of the 

 latter, which, when the mouth is open, are extended on a line with the upper surface of the snout. 



