306 Distribution of the Salmonide. 
DISTRIBUTION AND SOME CHARACTERS 
OF THE SALMONIDÆ.! 
BY TARLETON H. BEAN. 
iore family of Salmonidæ—embracing the white fishes, the 
salmons, and the trouts—is one of the most important of the 
temperate and arctic regions of the world. For the purposes of this 
paper, I exclude all of Argentinine, which have very little value, 
if we except the capelin, the eulachon, and the smelts. I omit, 
also, the graylings (Thymallus), which are set apart by Dr. Gill 
as representing a distinct family, Thymallide. The genera included 
in my essay are the following: Coregonus, Stenodus, Oncorhynchus, 
Salmo, and Salvelinus. 
Gommon White-fish (Coregonus clupeiformis). Ecorse, Michigan, About 4 natu- 
ral length. 
There are about forty nominal species of white fishes (Coregonus), — 
of which twelve are North American, and are readily distinguished 
by good characters, Several species are found in Great Britain; 
the rest are distributed over the North of Europe and Asia, scarcely 
extending as far southward as 46° North latitude. The largest 
1 Read before the Biological Society of Washington, Feb. 25, 1888. 
