Gill-cover slightly produced behind; the margin rounded: vomerine teeth extending the whole way: caudal forked: back and sides with X-shaped dusky spots: ventrals plain white.
S. Trutta, Linn. Syst. Nat. torn. i. p. 509. Block, Ichth. pl. 21. Turt. Brit. Faun. p. 103. Mem. Brit. An. p. 180. Jard. in Edinb. New Phil. Journ. vol. xviii. p. 49. Trutta lacustris, Will. Hist. Pise. p. 198. tab. N. 1. fig. 5. Truite saumonee, Cuv. Reg. An. torn. ii. p. 304.
From one to two feet, or rather more.
(Form). Not so slender as a Salmon of the same size: jaws nearly equal: teeth rather larger; those on the vomer extending all along the ridge of the palate, and forming by pressure a groove in the tongue between the two rows of lingual teeth: eyes rather nearer the extremity of the snout: gill-cover more produced behind than in either of the preceding species, the margin more curved; basal margins of the opercle and subopercle sloping obliquely upwards to form a considerable angle with the axis of the body: position of the fins much as in the Salmon; but the adipose rather larger; the caudal, with the outer rays shorter, and not so much forked; in very old fish nearly even: the fleshy portion of the tail rounded at its extremity: pectorals with their inferior margin straight: number of fin-rays,
D. 13; A. 11; C. 19, etc.; P. 14; V. 10.
Number of vertebrae fifty-eight. (Colours). Darker in the body, and lighter in the fins, than the Salmon: back and sides, above the lateral line, more thickly spotted; the spots assuming the form of the letter X; those above sometimes surrounded by a pale circle; gill-covers and cheeks spotted, as well as the dorsal and adipose fins: ventrals always plain white.
A common species, inhabiting the sea and rivers. Enters these last about the end of May or beginning of June. Is the Salmon-Trout of the London markets. Flesh red, and highly esteemed. Food, according to Sir W. Jardine, principally the Talitrus Locusta, or common Sand-hopper. Obs. According to Agassiz, the S. Lemanus of Cuvier is the same as the present species. The Sea-Trout of Pennant appears to be identical with the species last described, which is called by the above name in some rivers.
Brit. An. p. 180. Jard. in Edinb. New Phil. Journ. vol. xviii. p. 50. White, Penn. Brit. Zool. vol. iii. p. 302. Id. (Edit. 1812). vol. iii. p. 396. Herling, Jard. in Proceed, of Berwicksh. Nat. Club, p. 50.
This is held to be a distinct species by Sir W. Jardine, and some other of our naturalists. I must confess, however, that I have been unable to discern any appreciable difference between it and the last, of which, in the opinion of Mr. Yarrell and myself, it is only the young of the first year. Found in the Solway, the Tweed, the Esk, and a few other rivers in the North. Is sometimes called a Whiting or Phinoc. Pennant says it never exceeds a foot in length. According to Sir W. Jardine, the fish in the Solway average from a pound to a pound and a half in weight, very seldom reaching two pounds. It is added by this last gentleman, that "one of the most marked appearances of this fish, is the great proportional breadth of the back, and the peculiar grayish green colour of the upper parts".