SALilO PERISH. 325 



Salmo killinensis (GUNTHER). 



D. 1415, A. 13, P. 13, V. 9. Scales: lat. line 180. 



This fish is described by Dr. Giinther from Loch Killin, in Inverness-shire, 

 from adult examples ten to fifteen inches in length. The head and body are 

 thick, and but slightly compressed. The greatest depth of the body is equal to 

 the length of the head, and measures two-ninths of the total length. The 

 maxillary bone scarcely extends beyond the hind margin of the orbit. The 

 lower jaw is rather shorter than the upper ; the snout is blunt. The diameter 

 of the eye is less than the length of the snout, and half the width of the inter- 

 orbital space. The teeth are very small. The sub-operculum is very short 

 and high. 



This species is remarkable for the excessive development of the fins, the 

 pectoral being scarcely shorter than the head, and the dorsal, which is high 

 and long, is a little shorter than the pectoral. The ventral fin extends nearly 

 to the vent. The caudal is broad. 



The head and upper parts of the body and fins are brownish-black ; the 

 lower parts are orange-coloured, and there are very small light spots on the 

 sides, which are not very conspicuous. The anterior margins of the abdominal 

 fins are white or orange-coloured, as in the Icelandic Charr, Salmo nivalis, 

 of which this fish may be regarded as a Scottish representative. 



The number of vertebrae is the same (sixty-two), and the pyloric ap- 

 pendages vary between forty- four and fifty- two. 



Salmo perisii (GUNTHER). 



D. 1314, A. 1211, P. 1213, V. 9. Scales : lat. line 170. 



The lakes of North Wales, especially the Lake of Llanberis, yield a 

 Charr, known as the Torgoch, which we may regard as the Welsh variety of 

 Salmo salvelinus. Adult specimens have a length of nine inches. It has been 

 carefully described by Dr. Giinther, whose description brings out its close 

 resemblance to the Charr of Wiudermere. It has the same compressed elon- 

 gated body. The eye is similarly one-fifth of the length of the head, but 

 the mandible is slightly curved upward so as to reach the upper jaw. 



The anterior nostril is round, open, and surrounded by a membrane, which 

 becomes a small flap posteriorly, that covers the smaller oblong posterior 

 nostril. This character is one of the most distinctive peculiarities of 'the Welsh 

 Charr. 



