T. vulgaris, Nilss. Prod. Ichth. Scand. p. 13. Thymallus, Will. Hist. Pise. p. 187. tab. N. 8. Salmo Thymallus, Linn. Syst. Nat. torn. i. p. 512. Bloch, Ichth. pl. 24. Don. Brit. Fish. vol. iv. pl. 88. Turt. Brit. Faun. p. 104. Coregonus Thymallus, Flem. Brit. An. p. 181. Grayling, Penn. Brit. Zool. vol. iii. p. 311. pl. 61. no. 150. Id. (Edit. 1812). vol. in. p. 414. pl. 72. Ombre commune, Cuv. Reg. An. torn. n. p. 306.
From ten to fifteen, rarely eighteen, inches.
(Form). Back slightly elevated at the commencement of the dorsal fin, from which point it falls gradually to the snout: greatest depth one-fifth of the entire length; thickness not quite half the depth: head contained five times and a half in the entire length: snout rather short; obtuse, and rounded: gape small: upper jaw a little the longest: maxillary, and all the other teeth, small and fine: lateral line at first slightly descending, afterwards straight: scales large, disposed in longitudinal rows; seven and a half above the lateral line, the same number below it: dorsal commencing at one-third, and occupying about one-fourth, of the entire length; being twice as long as high; its greatest elevation three-fourths of the depth of the body; anterior rays gradually increasing from the first, which is very short, to the eighth and ninth, which are longest; tenth and succeeding rays slightly decreasing; first eight simple, the rest branched: adipose situate at nearly two-thirds of the distance from the dorsal to the base of the caudal: anal commencing a little beyond the tip of the reclined dorsal; shaped like that fin, but much smaller; first five rays simple, the rest branched: caudal deeply forked: pectorals three-fourths the length of the head: ventrals about the same; attached beneath the middle of the dorsal; with a long narrow scale in their axillae:
B. 10; D. 22; A. 15, the last double; C. 19, and some short ones; P. 15; V. 11.
(Colours). Upper part of the head dusky; back and sides silvery gray, marked with longitudinal dusky streaks: dorsal spotted; the spots arranged in longitudinal lines: other fins plain.
* I may state in this place that the Mallotus villosus, or Capelin, was inserted by error in my Catalogue as a doubtful inhabitant of the British seas. There is no recorded authority for such insertion.
An inhabitant of streams and rivers, in which it remains stationary all the year, though asserted by Donovan to be migratory *. Partial to clear and rapid waters. Found in Derbyshire, in some of the rivers in the North, and in a few other parts, of England. Food, insects, testaceous mollusca, small fish, etc. Spawns in April and May. Has been known to attain the weight of five pounds †, but is usually found much smaller.