I'Auu, 49 



Tlie Icno-tli of tlic liciul is, as C(>in))arc(l lo ilic wliolc 

 length of tlio head, body, and tail, including the caudal rays, 

 as one to five ; the body of greater girth than that of the 

 young of the Salmon wlien of the same length ; the pectoral 

 fin of great breadth and lengtli, nearly as long as the head ; 

 the base of the last ray of the dorsal fin exactly half-way 

 between the point of the nose and the end of the upper half 

 of the tail ; the base of the dorsal fin considerably shorter 

 than the third ray of that fin, which is the longest ; the 

 second dorsal or fleshy fin half-way between the origin of 

 the first ray of the dorsal fin and the end of the upper half 

 of the tail, and in a line over the origin of the last ray of 

 the anal fin ; the tail deeply forked, much more so than that 

 of the Trout ; the lower jaw shorter than the upper ; the 

 teeth small, placed in five lines on the upper inner surface 

 of the mouth ; two or three small hooked teeth on the supe- 

 rior lateral portion of the tongue on each side towards the 

 tip, and a row of small teeth on each side of the under jaw : 

 the eye large, its diameter one-fourth of the length of the 

 head, and placed at the distance of its diameter from the 

 point of the nose. The fin-rays in number arc — 



U. 13 : p. 14 : V. 9 : A. 9 : C. 19 : Vertebra; 60. 



The following description of the colours of the Parr is 

 derived from Dr. Heysham"'s paper already quoted, my 

 specimens being aflPected by immersion in spirits. 



" Head green and ash colour. Gill-coyers tinged with a 

 variable green and ])urple, and marked with a round dark- 

 coloured spot : in some specimens there are two of these 

 spots on each gill-cover. Back and sides, down to the lateral 

 line, dusky and marked with numerous dark-coloured spots. 

 Belly white. Along the lateral line there are from sixteen 

 to thirty bright yermilion spots. The sides are marked 



