SALMONID/E. 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 iuches in length. 



Names. Torgoch in Wales signifies tor "a belly", and goch "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. 



*o 



Variety b. 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. Fish. 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. 



Willughbt/s charr, Couch, Fish. Brit. Isles, iv, p. 262, pi. cexxii. 



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

 59-62, Ccec. 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 have 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,f 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(b -to) I 0, P. 13, V. 9, A. 13 CiV), C. 19, L. 1. 1 35, Vert. 62, Ccec. pyl. 44-52. 



Length of head 4|-, of caudal fin Q\, 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 ther-e were 135 pierced scales along the latei*al-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 8. 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 Spitsbergen. 



8 



