0< SALMONIIXE. 



the base of the last ray of the dorsal fin and the end of the 

 tail. The body of the fish rather deep for its length ; 

 the lateral line very nearly straight, and passing along the 

 middle of the body : the scales adhering closely ; in form 

 rather a longer oval than those of the Salmon, and having 

 about twenty-three in the usual line up to the dorsal fin, and 

 twenty-two below it. The fin-rays in number are 



D. 12 : P. 13 : V. 9 : A. 10 : C. 19. Vertebra 58. 



The upper part of the head and back dark bluish black, 

 becoming lighter on the sides, which are marked with nu- 

 merous spots, somewhat resembling in form the letter X : 

 these spots are mostly above the lateral line. The lower part 

 of the sides and belly silvery white ; cheeks and gill-covers 

 silvery white ; the dorsal fin, fleshy fin, and tail, nearly as 

 dark as the colour of the back ; the pectoral fin rather small 

 and bluish white ; the ventral fins white, arising in a vertical 

 line under the middle of the dorsal fin ; the anal fin white, 

 the base of the fin one-third shorter than the longest of its 

 fin-rays. When the Salmon Trout is placed by the side of 

 a Salmon, it is, in comparison, darker in colour in the body, 

 but lighter in the colour of the fins. 



The specimens of the Phinock or Hirling of the North, 

 the Salmo albus of Dr. Fleming, which I have received, so 

 exactly resemble the young of the Salmon Trout on its first 

 return from salt water that I am unable to point out any 

 sufficiently distinguishing specific character. 



The coloured Illustrations of the Scottish Salmonidte by 

 Sir William Jardine, Bart., represent this species, and also 

 the Salmon in various stages of growth. 



