SCIENTIFIC SURVEY. ^09 



Sub-class Teleostei. Samionoid^. 



Sub-family Salmonin^, Bona. Genus Salmo, Linn. 



Gen. Char. Head large ; mouth generally deeply cleft and armed with conspic- 

 uous teeth. Premaxillary bones short and rather situated upon the sides of the 

 snout than immediately upon its extremity. The masillaries are attached behind 

 them and composed, each, of a single piece. The lower jaw is strong and terminates 

 oftentimes into a small knob or tubercle, which in some species acquires a very 

 great developement. Strong and conical teeth are inserted in a single I'ow on the 

 dentary; but the teeth vary in different species. Body fusiform in profile, one 

 anterior dorsal fin followed by a small adipose one. Caudal fin yfell developed, and 

 either truncated posteriorly or slightly emarginated. 



Salmo Toma, Hamlin. 

 Togue. 



This trout known among the aborigines as the Togue, Tuladi, 

 etc., has been classed by some observers, as identical with the 

 Salmo Hucho of the Danube and of the lakes of Northern Europe ; 

 but in these classifications, peculiarities of anatomical structure 

 have been overlooked, and the habits of the two fishes have also 

 been noted as similar, whereas in reality they present great con- 

 trasts, for the one, agile and alert, seeks the swift and foaming 

 currents of the clearest streams, and the other sly and sluggish, 

 haunts always the quiet waters of the deepest lakes. It is men- 

 tioned by Mr. Gesner in his report upon New Brunswick, and 

 identified with the Salmo lacustris of Lake Geneva ; a proper ex- 

 amination of the two fishes, however, will satisfy the naturalist 

 that few positive analogies can bo drawn ; and again it is identified 

 with the Salmo ferox of Loch Awe in Scotland, in the descriptive 

 catalogue of fishes of New Brunswick, by Mr. Perley, who identi- 

 fies from the characters drawn by Sir W. Jardine and Mr. Yarrell, 

 some of which would certainly lead the observer, unless minute, 

 into the same error, for it cannot be denied that great similarities 

 are to be observed, but there are also as many with the ;S^. eryihinus 

 of Siberia. 



There is none among all the Salmonidse, which resembles it more 

 in form, color, linear markings, etc., than the S. Siscowet described 

 by M. Agassiz, and until that eminent naturalist in a momentary 

 examination observed differences, it was regarded as identical with 

 that species. 



In shape it is not so elegant as that of some other species of the 

 Salmonidee, but its whole form indicate great strength and swift- 



