1 66 Natural History of the River Trout. 



of the distance of its base from that of the ventral ; 

 in specimens under ten inches it is somewhat 

 longer. The caudal fin is emarginate in young 

 examples, but has become truncate in specimens 

 of eight inches in length, in which the middle 

 caudal rays is only two-thirds that of the outer 

 ones. The hind part is short and rather high ; 

 there are about sixteen scales in a transverse series 

 descending from behind the adipose fin obliquely 

 backwards to the lateral line. Body, head, and 

 dorsal fin generally with numerous red and black 

 spots ; a part of the latter have generally a light 

 edge. These black spots are either round, or more 

 irregular in shape, composed of X-shaped marks. 



"Anterior margin of the dorsal and anal, and 

 the outer one of the ventrals, generally yellowish. 



" A non-migratory species, inhabiting numerous 

 fresh waters of Central Europe, Sweden, and 

 England series of the Maritime Alps. 



"D. 13-14, A. 10-11, P. 13, V. 9, L. lat. 120, 

 L. transv. 26/30, ' Coecal Pyl.' 38-47 (51), Vert. 

 57-58 (56, if the last rudimentary caudal vertebra 

 be not counted)." 



The two varieties, or species, or whatever they may 

 be, appear from the above to be united in Shropshire ; 

 but I feel pretty certain that each will be found in 

 many more rivers, both in the north and in the 

 south, than Dr. Giinther has any idea of. The only 



