The Trout 



are a dozen or more well-defined sub-species 

 or geographical varieties, but all have the 

 characteristic red splashes on the membrane 

 of the throat. By means of this " trade- 

 mark " it may be readily distinguished from 

 the rainbow or steelhead trouts, both of 

 which are also black-spotted. 



But while the red-throat trout varies con- Nomenclature 

 siderably in contour, coloration and mark- 

 ings, in different localities, it is identical 

 in structure wherever found. It is known by 

 the United States Bureau of Fisheries as the 

 " black-spotted trout," a most unfortunate 

 designation, inasmuch as the rainbow and 

 steelhead trouts are also " black-spotted." 

 The name red-throat is distinctive, and is 

 preferable to the rather repulsive name of 

 " cut-throat " trout by which it is also 

 known. The red-throat trout is designated 

 in its native waters by such names as 

 " trout," " brook trout," " speckled moun- 

 tain trout," etc. As the Eastern red-spotted 

 " brook trout " is rapidly being introduced 

 to Western waters, the name "brook trout" 

 should be applied only to that species. 

 103 



