426 PISCES (OSSEI) MALACOPT. [SALMO. 



extracted. The fins may be stated nearly thus, though a greater varia- 

 tion may occur; 



D. 13 to 15 ; A. 12; P. 14; V. 11 ; gill-covers, 12: 



the greatest variation occurs in the dorsal fin." JARD. (Colours.) 

 " Deep purplish brown on the upper parts, changing into reddish gray, 

 and thence into fine orange-yellow, on the breast and belly : the whole 

 body, when the fish is newly caught, appearing as if glazed over with 

 a thin tint of rich lake-colour, which fades rapidly away as the fish dies : 

 gill-covers marked with large dark spots : the whole body covered with 

 markings of different sizes, and varying in amount in different indivi- 

 duals; the markings, in some, few, scattered, and of a large size; in others, 

 thickly set, and of smaller dimensions : each spot surrounded by a paler 

 ring, which sometimes assumes a reddish hue: the spots more distant 

 from each other as they descend beneath the lateral line: lower parts 

 of the fish spotless." JARD. 



A new species first identified as distinct from the Common Trout by 

 Sir W. Jardine and Mr. Selby. The former of these gentlemen states 

 that it is generally distributed in all the larger and deeper lochs of Scot- 

 land, but that it seldom ascends or descends the rivers running into or 

 out of them, and never migrates to the sea. Very voracious, feeding 

 nearly entirely upon small fish. Average weight from ten to twenty 

 pounds: has been known, however, to reach twenty-eight pounds. 

 Spawns in Autumn. Obs. It is probably the same as the S. lacustris 

 of Berkenhout*, though (in the opinion of M. Agassiz) not of conti- 

 nental authors. 



108. S. Salmulus, Turt. (Samlet.) Vomerine teeth 

 extending the whole way: maxillaries reaching to beneath 

 the centre of the orbit : caudal forked for half its length : 

 sides marked with long, narrow, transverse, bluish bands. 



S. Salmulus, Turt. Brit. Faun. p. 104. Jard. in Edinb. New Phil. 

 Journ. vol. xvm. p. 56. Salmulus, Will. Hist. Pise. p. 192. 

 tab. N. 2. fig. 2. Ray, Syn. Pise. p. 63. Samlet and Parr, Penn. 

 Brit. Zool. vol. in. p. 303. pi. 59. no. 148. & pi. 66. no. 78. Id. 

 (Edit. 1812.) vol. in. p. 404. pis. 70, & 77. 



LENGTH. From six to eight inches. 



DE SCRIPT. (Form.) Closely resembling the young Trout, but differing 

 in the following particulars. Body somewhat deeper in proportion to its 

 length : snout blunter : teeth weaker and less developed ; those on the 

 tongue not very conspicuous : maxillary shorter, not reaching beyond a 

 vertical line from the centre of the orbit ; also broader at its posterior 

 extremity: gill-cover not so much produced into an angle, the hinder 

 margin being more regularly rounded, as in the Salmon : " scales, taken 

 from the lateral line below the dorsal fin, altogether larger, the length 

 greater by nearly one-third, the furrowing more delicate, and the form of 

 the canal not so apparent or so strongly marked towards the basal end of 

 the scale t : " caudal more deeply forked, the fork extending about half 

 its length : pectorals larger. (Colours.) " The row of blue marks on 

 the sides, which are also found in the young Trout, and in the young 



* Sun. vol. i. p. 79. 



t This character, which I have not had an opportunity of verifying myself, is taken from 

 8ir W. Jardine. 



