SALMON. 



85 



extremely numerous in species in the Old and New Worlds, of 

 which the following are well known in England : — The Roach 

 (L. rutilus), the Chub (L. cephalus), the Dace (L. leuciscus), the 



Fig. 72. 



Mahaseer (j3arbus mosal). 



Rudd (L. erythrophthalmus), and the Minnow (L. phoxinus). 

 Other British Cyprinoids are the Tench [Tinea tinea), the Bleak 

 [Alburnus alburnus), the Bream [Abramis brama), and the Loaches 

 [Nemachilus barbatulus and Cobitis tamia) . 



The Salmonidce (Case 19) are one of the most valuable families 

 of the Class of Fishes. They are inhabitants of the sea and fresh 

 water; but the majority of the marine genera are deep-sea forms. 

 The freshwater forms are peculiar to the Temperate and Arctic 

 zones of the Northern Hemisphere, one only occurring in New 

 Zealand. Many migrate periodically or occasionally from fresh 

 water to the sea, or vice versa. The genus Salrno, containing the 

 Salmon, Trout, and Char, is abundant in species, some being 

 migratory, others not ; they are spread over the whole of Europe 

 and North America. 



Of the species exhibited attention is directed especially to the 

 following : — the Lake-Wenern Trout [Salrno venernensis), a non- 

 migratory species; a large Sea-Trout from the River Narenta, 

 Dalmatia [S. dentex) ; two male British Sea-Trout [S. trutta) with 

 extraordinary development of the jaws; a large specimen of the 

 Alpine Char [S. alpinus) from Nova Zembla ; the Brook-Trout of 

 North America [S. funtinalis and S. hoodii). In a tank on a table- 

 case between wall cases 17 and 18 a beautiful large specimen of 

 the Common Trout [S. fario) is exhibited, which has been reared 



