CHAP. XX.] FISHES. 447 



Family 64.— STOMIATID^. (4 Genera, 8 Species.) 



" Small marine fishes, naked or with very fine scales." 



DiSTKiBUTiON.— The Mediterranean and Atlantic. 



These are deep-sea fishes, ranging from Greenland to beyond 

 the Equator. . 



Family 65.— SALMONID^. (15 Genera, 157 Species.) 



"Fresh-water fishes, many species periodically descending 

 to the sea and a few altogether marine : — Salmon and Trout." 



DiSTEiBUTiON. — The Palsearctic and Nearctic Regions, and one 

 genus and species in New Zealand. A considerable number of 

 species are confined to single lakes or rivers, others have a wide 

 distribution. 



The genera are distributed as follows : — 



Salmo (83 sp.), rivers and lakes of the Paljearctic and 

 Nearctic Eegions, as far south as Algeria, Asia Minor, the Hindoo- 

 Koosh and Kamschatka, and to about 38° North Latitude in 

 North America, many of the species migratory ; Oncliorhynchus 

 (8 sp.), American and Asiatic rivers entering the Pacific, as far 

 south as San Francisco and the Amur ; Brachymystax (1 sp.), 

 Siberian rivers, from Lake Baikal and the Atlai Mountains 

 northwards; Ludotridta (2 sp.), Caspian Sea and Volga; 

 Plecoglossus (1 sp.), Japan and Formosa ; Osmerus (3 sp.), rivers 

 of temperate Europe and North America entering the Atlantic, 

 and one species in California ; Thaleichthys (1 sp.), Cokimbia 

 Eiver, Vancouver's Island ; Hypomesus (1 sp.), coasts of Cali- 

 fornia, Vancouver's Island, and North-eastern Asia; Mallotus 

 (1 sp.), coasts of Arctic America from Greenland to Kams- 

 chatka; Retropinna (1 sp.), fresh waters of New Zealand; 

 Coregonus (41 sp.), fresh waters of northern parts of temperate 

 Europe, Asia and North America, many of the species migra- 

 tory : Thymallus (6 sp.), fresh waters of temperate parts of 



