GREAT LAKE TROUT. 113 



For the opportunity of obtaining a drawing of this fish 

 I am indebted to the kindness of Mr. Selby and Dr. 

 Richardson. 



The length of the head is to the whole length of head, 

 body, and tail, as one to four and a half; the depth of the 

 body not equal to the length of the head : the teeth large, 

 strong, and numerous, occupying five lines above and four 

 below, thus extending along the length of the vomer : the 

 free edge of the gill-cover rounded in the female, more angu- 

 lar below in the males ; the inferior edge of the suboperculum, 

 and the line of its junction with the operculum, oblique. The 

 commencement of the dorsal fin is half-way between the 

 point of the nose and the origin of the first upper caudal 

 ray ; the third dorsal fin-ray, which is the longest, equal to 

 the length of the base of the dorsal fin ; the soft fleshy fin 

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

 caudal rays, and in a line over the origin of the last ray of 

 the anal fin : the ventral fins each with an elongated axillary 

 scale ; the fins rather small in size, but very muscular. 

 The fin-rays in number in this specimen from Loch Awe 

 were 



D. 13 : P. 14 : V. 9 : A. 11 : C. 19. 



The specimens examined from Lough Neagh had one 

 ray less in the dorsal, pectoral, and anal fins, and one ray 

 more in the caudal fin. For an excellent account of this 

 fish, see the article Angling in the seventh edition of the 

 Encyclopaedia Britannica, from which I derive the following 

 description of the colours of this species, which was probably 

 taken from a recent specimen. 



" When in perfect season and full-grown, it is a very 

 handsome fish, though the head is always too large and long 

 to be in accordance with our ideas of perfect symmetry in a 

 Trout. The colours are deep purplish brown on the upper 



VOL. II. I 



