SALMONIDyE. 113 



pectoral fin.* Rayed dorsal fin 2/3 the length, of the head : pectoral reaching more 

 than half the distance to the base of the ventral. Sides with numerous red spots : 

 belly red in the adult : pectoral, ventral and anal fins with white upper or anterior 

 edges. There are said to be 170 rows of scales descending to the lateral-line. 



Stated to be a smaller form than the Windermere charr, seldom exceeding 12 or 

 13 inches in length. 



Names. — Torgoch in Wales signifies tor "a belly", and gocli "red": the red 

 charr. 



Habits. — Said to emerge from the depths of the lakes seeking the shallows 

 for a short period in midwinter. Rises to a fly. 



The example figured is one of the British Museum specimens 9|- inches in 

 length, sent from the Lake of Llanberris by Mr. T. Ellis. It has 135 scales 

 along the lateral-line. 



Variety &.— Salmo Willughbii, Plate CXVII, fig. 2. 



Charr of Windermere, Willugh. 1. c. ; Case charr, Pennant, 1. c. and Ray, 1. c. 



Salmo alpinus, Donovan, Brit. Pish. pi. lxi ; Turton, Brit. Fauna, p. 104 ; 

 Fleming, Brit. An. p. 180. 



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

 p. 439. 



Salmo Willughbii, Giinther, Proc. Zool. Soc. 1862, p. 46, pi. v, 1863, p. 11, and 

 Catal. vi, p. 131. 



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



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



D. 12-13 (V£) | 0, P. 13-14, V. 9-10, A. 11-12 ( ¥ ^), C. 19, L.l. 126, Vert. 

 59-62, Coec. pyl. 28-44. 



Teeth — Of moderate strength, 4 in each premaxillary ; 20 in each maxillary. 

 Fins — pectoral reaches more than half-way to the root of the ventral. Colours — 

 sides with red dots : belly red : pectoral, ventral and anal with white margins. 



Scales — said to bave 180. The one figured, from a specimen 8 inches long, 

 (S. Struanensis) had 126 along the lateral-line. Eight others from the Lakes 

 had from 118 to 128. 



Variety c— Salmo Killinensis,t Plate CXVIII, fig. 1. 



Giinther, Proc. Zool. Soc. 1865, p 699, pi. xl, and Catal. vi, p. 130; Houghton, 

 Brit. Freshwater Fish. p. 145. c. fig. 



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



D. 14( ¥ _* T o) | 0, P. 13, V. 9, A. 13 (-/o), C. 19, L. 1. ] 35, Vert. 62, Ccec. pyl. 44-52. 



Length of head 4^, of caudal fin 6j, height of body 4^ in the total length. 

 Eyes — diameter about 1/6 of the length of the head, 2 diameters from the 

 end of the snout, and also apart. Form of preopercle varies in different 

 specimens ; subopercle mostly short and high. Maxilla reaches to behind the 

 orbit. Teeth — small. Fins — dorsal, pectoral, and ventral well developed. 

 Scales — D. Giinther counts 180 rows descending on to the lateral-line ; in the 

 example figured there were 135 pierced scales along the lateral-line. Colours — 

 dark, sides with few light spots. In some the anterior edges of the lower fins are 

 light coloured. 



The example figured is 12j inches long in the National collection : it was 

 obtained by the late Mr. Gould from Loch Killin, Inverness-shire, in October: 

 it has been disembowelled. 



* These appearances are not peculiar to this variety. 



f S. arcturus, Giinther, the most northern Salmonoid recorded, N. lat. 80° 28' by 34' is differen- 

 tiated from 8. killinensis owing to its being a little more slender ! Malmgren (iEfv. Sven. Vet. 

 Akad. Fork. 1865, p. 534) remarks upon an example of Salmo alpinus, 76 millim. long, found in 

 a river in Northern Spitzbergen. 



