CATALOGUE 



OF 



FISHES. 



Subclass I. TELfiOSTEI. 



{CONTINUED.) 



Order IV. PHYSOSTOMI. 



{CONTINUED.) 



Fam. 7. SALMONID^. 



Salmonidse, MiiU. Ahhandl. Acad. Wiss. Berl. 1844, p. 186, 



Body covered with scales*, head naked; barbels 

 nont;. Margin of the upper jaw formed by the inter- 

 maxillaries mesially, and by the maxillaries laterally. 

 Belly rounded. A small adipose fin behind the dorsal. 

 Pyloric appendages generally numerous, rarely absent. 

 Air-bladder large, simple ; pseudobranchiee present. 

 The ova fall into- the cavity of the abdomen before 

 exclusion. 



Fresh waters of the temperate arid arctic regions of the northern 

 hemisphere, many species periodically descending to "the sea. One 

 genus from New Zealand ; two genera pelagic. 



* See Salanx, p. 205. 

 YOL. VI. B 



