SALMONOIDE.E. 



183 



curved stripe running along one side : they were pointed at both ends, the least acute being 

 the end that moved most, and having apparently an orifice in its apex. The male namaycush 

 measured thirty-five inches, including the caudal, and sixteen from the tip of the snout to the 

 dorsal. The colours mentioned in the preceding description are those of this individual at 

 the time of capture ; the spots become more evident as the skin dries. The trout described 

 by Dr. Mitchill was brought from Michillimackinac, and weighed thirty-two pounds and a 

 half after the intestines were removed. It was fifty-four inches long, nine deep, and twenty- 

 four in circumference. 











Dimensions 











Of the Lake Huron 



specimen described above. 











Inches. 



Lines. 







Inches. 



Line 



ngt 



i from tip of snout to tip of caudal 



. 29 



6 



Length 



of labial .... 



. 3 







j» 



„ end of scales . 



. 26 







'i 



lower jaw .... 



4 



8 



j» 





, anus . . 



. 19 







»> 



toothed edge of ditto 



. 2 



11 



)j 





„ dorsal . 



13 



6 



'» 



attachment of dorsal 



3 







3» 





, edge of suboperculum 



. 7 



4 



» 



its longest ray . 



. 3 



9 



n 





, nape 



4 



9 



» 



its last ditto 



1 



2 



» 





, tip of labials . . 



. 3 



10 



V 



ventrals .... 



. 3 



6 



j) 





, basal end of snout . 



2 



11 



„ 



attachment of anal 



2 



2 



jj 





, centre of pupil . 



. 2 



6 



„ 



its longest ray . . . 



. 3 



7 



->» 





, anterior edge of orbit 



2 



1 



»> 



its last ditto 



1 







11 



centre of pupil to edge of gill- 



cover 5 







» 



lobes of caudal . . 



. 5 







»> 



hind edge of orbit to ditto 



. 4 



2 



» 



central rays of ditto 



1 



9 



,» 



of transverse axis of orbit . 







11 



Distance between anus and base of caudal 



. 5 



10 



II 



vertical ditto 



. 



10 



Depth of caudal fork .... 



2 



2 



>? 





intermaxillary 



1 















[70.] 10. Salmo Mackenzii. (Richardson.) The Inconnu. 



Inconnu. Mackenzie, Foy. in N. Amer., p. 9, and elsewhere. 

 Salmo Mackenzii. Richardson, Frank. Journ., p. 707, plate. 



Plate 84, one-third nat. size. f. a., nat. size. 



This, according to Indian information, is an anadromous species, and is only 

 known to exist in the Mackenzie and its tributaries, to which it can have access from 

 the sea. It is never taken above the cascades of Slave River, in latitude 60° N. ; 

 but it forms an important article of food, at certain seasons, on Great Slave Lake 

 and the Mackenzie. Its flesh is white, and when in good condition tolerably 

 palatable, though rather soft and oily, and soon becoming disagreeable when used 

 as daily food : it is firmest and best near the mouth of the Mackenzie, and when 

 out of season is considered by the natives to be very unwholesome. The Incon- 



