238 SALMONID^ OF BRITAIN". 



Salmo iimbia, Jenyns, Brit. Vert. p. 427 ; Thompson, Ann. and Mag. 1840, vi, 



p. 430. 



Salmo WiUughhii, Gilntlier, Proc. Zool. Soc. 1862, p. 46, pi. v, 1863, p. 11, and 

 Catal. vi, p. 131 ; Day, Brit, and Irish Fish, ii, p. 113, pi. cxvii, f. 2. 



Salmo stnianensis, Gibson-Maitland, Field, Oct. 8th, 1881, p. 516. 



Willoughhys charr, Couch, Fish. Brit. Isles, iv, p. 262, pi. ccxxii. 



Variety. LocH Killin Char.* 



Salmo hillinensis, Giinther, Proc. Zool. Soc. 1865, p. 699, pi. xl, and Catal. vi, 

 p. 130 ; Houghton, Brit. Fresh- water Fish. p. 145, c. fig. ; Day, Brit, and Irish 

 Fish, ii, p. 113, pi. cxviii, f. 1. 



? Salmo arckmis, Giinther, Proc. Zool. Soc. 1877, p. 294, pi. xxxiii. 



Variety. Grays CnAR.f 



Salmo alpinus, Dubourdieu, Hist. Co. Antrim, i, p. 119 ; Thompson, Ann. Mag. 

 Nat. Hist. 1840, vi, p. 448. 



Sahno timlla, Thompson, 1. c. p. 439 (yomig) and Nat. Hist. Ireland, iv, p. 160. 



Salmo Grayi, Giinther, Proc. Zool. Soc. 1862, p. 51, pi. vii, and 1863, p. 12, 

 and Catal. Fish. Brit. Museum, vi, p. 136 ; Houghton, Brit. Fresh-water Fishes, 

 p. 139, c. fig. ; Day, Brit, and Irish Fish, ii, p. 114, pi. cxix, f. 1. 



Grays charr, Couch, Fish. Brit. Isles, iv, p. 267, pi. ccxxiv. 



Variety. CoLES Char.| 



Salmo Coin, Giinther, Proc. Zool. Soc. 1863, p. 12, pi. ii, and Catal. Fish. Brit. 

 Mus. vi, p. 138; Houghton, British Fresh-water Fishes, p. 138, c. fig. ; Day, Brit, 

 and Irish Fish, ii, p. 114, pi. cxviii, f. 2. 



Coles Charr, Couch, Fish. Brit. Isles, iv, p. 269, pi. ccxxv. 



B. x-xi, D. 12-14 Gs^^o) I 0, P. 12-14, V. 9-10, A. 11-13 U.^%) C. 19-21, L. 1. 

 125-145, L. tr. 25-31/30-40, Crec. pyl. 28-62, Vert. 59-63. 



* D. 14 (^-■Vo) I 0, P. 13, V. 9, A. 13 (t%), C. 19, L. 1. 135, Vert. G2, Ctec. pyl. 41-52. 



Length of head 4i, of caudal fin 6^, height of , body 4^ in the total length, iyes— diameter 

 about 1/6 of the length of the head, 2 diameters from the end of the snout, and also ajpart. Form 

 of preopercle varies in different specimens ; subopercle mostly short and high. Maxilla reaches 

 to behind the orbit. Teeth— smsdl. Fins — dorsal, pectoral, and ventral well developed. Scales — 

 Dr. Giinther counts 180 rows descending on to the lateral-line ; in an example examined there 

 were 135 pierced scales along the lateral-line. Colours — dark, sides with few hght spots. In some 

 the anterior edges of the lower fins are lightly coloured. <S'. arcturus, Giinther, the most northern 

 Salmonoid recorded N. lat. 80° 28' by 34' is differentiated from *S'. killinensis owing to its being a 

 httle more slender 1 Malmgren (^fv. Sven. Vet. Akad. Fork. 1865, p. 534) remarked upon an 

 example of Salmo alpinus, -76 milhm long, found in a river in Northern Spitzbergen. 



t D. 13-14 {ij%) I 0, P. 13-14, V. 9, A. 12 (§), C. 21, L. 1. 125-140, L. tr. 31/30, Csec. pyl. 37, 

 Vert. 60. 



Lower jaw feeble. Teeth— snmW, 4 on each premaxillary and about 16 on each maxillary. 

 2^j,is_(lorsal commences slightly nearer the snout than in the other forms, the fin being in the 

 centre of the length of the back. Pectoral terminates at no great distance from the ventral : fins 

 well developed. — Scales — 19 rows from the hind edge of the adipose dorsal fin downwards and 

 forwards to the lateral-line ; 25 rows beween the lateral-hne and the base of the ventral fin : 125 

 to 140 rows along the lateral-line. Colours — sides with orange dots : fins with or without a light edge. 



Thompson observed of the char of Lough Melvin, that " the males are generally more grace- 

 fully formed than the females, and most of them are rather brighter in colour, but there is no 

 external character so strikingly different as to lead to a certain knowledge of the sex : some of the 

 largest finned are females." They are termed "fresli-tvater herrings " in Lough Melvin. When 

 cooked the flesh is pale and its taste insipid. As to their breeding, Mr. Houghton received some from 

 Lou"h Melvin in November, the males had not parted with their milt, nor the females with their ova. 



I D. 13-14 {rUto) 1 0, P. 13, V. 9, A. 12 (§), C. 19, L. 1. 125-128, L. tr. 31/30._ Case. pyl. 42, Vert. 63. 



Teeth — very small, 4 to 6 in each premaxillary, 14 to 17 in each maxillary. Fins — pectoral 

 not reaching nearly to the ventral. Ventral and anal fins with a narrow white anterior edge. 

 Scales — 125 rows along the lateral-line, and 160 descending to it: IS rows between the hind edge of 

 the adipose dorsal fin and the lateral-line : and 25 from the lateral-line to the base of the ventral 

 fin. The form of S. Colli appears to be principally distinguished from ,S'. Grayii by the compara- 

 tive shortness of its pectoral fins. It has been recorded from Lough Eske (Esk or Yesk, "a fish"), 

 the crater of an extinct volcano, and L. Dan. 



