68 



SALMONID.E. 



Charr have been applied to them : Pennant, however, states 

 that, after the closest examination, he was unable to discover 

 any specific difference. 



The most common size of our Northern Charr is from 

 nine to twelve inches in length ; they are said occasionally 

 to attain the length of two feet ; the largest specimen in my 

 possession measures eighteen inches. The finest coloured 

 specimen I ever saw was brought me by my friends T. B. 

 Giles and W. C. Hewitson, from Coniston Water, in the 

 month of May. They are considered to be in the greatest 

 perfection as food from July to October. 



The length of the head compared to the length of the 

 head and body is as one to five ; the depth of the body 

 greater than the length of the head : the commencement of 

 the dorsal fin is half-way between the point of the nose and 

 the adipose fin ; the posterior edge of the base of the adipose 

 fin half-way between the origin of the last dorsal fin-ray and 

 the end of the longest caudal ray ; the longest dorsal fin-ray 

 but one-fourth longer than the base of that fin : the pectoral 

 fin small ; the ventral fins originate half-way between the 

 point of the nose and the commencement of the under caudal 

 rays ; the ventral axillary scale nearly half as long as the fin ; 

 the anal fin small, the longest ray but little longer than the 

 base of the fin ; the tail deeply forked, the longest rays more 

 than as long again as those in the centre ; all the fins of 

 small comparative size. The fin-rays in number are 



D. 13 : P. 12 : V. 9 : A. 11 : C. 19. Vertebra 59. 



The diameter of the eye is less than one-fourth of the 

 length of the whole head ; it is placed at the distance of one 

 diameter from the point of the nose : the teeth small ; a few 

 on the anterior part only of the vomer ; the other four rows 

 above and four rows below, as usual in the fishes of this 



