12 DR. A. GTJNTHER ON THE BRITISH CHARRS. [Jan. 13, 



d. Salmo nivalis. Iceland Charr. (PI. I.) 

 In the original description of S. willughbii (p. 48) I mentioned 

 several specimens of a Charr from Iceland, which were not fit for an 

 accurate examination, owing to the manner in which they had been 

 preserved. Meanwhile I have received from Mr. G. G. Fowler two 

 very fine examples of the same species, which, although young 

 (10 inches long), prove that it is distinct from the other European 

 Charrs. It is probably identical with the dark variety of S. alpinus, 

 mentioned by Faber (Fische Islands, p. 169), for which he proposed 

 the name of S. nivalis, if some future ichthyologist should point out 

 its distinctive characters. 



Diagnosis. — Body slightly compressed and elongate ; its greatest 

 depth equals the length of the head, and is one-fifth, or somewhat 

 less than one-fifth, of the total length ; the length of the head is 

 rather more than one-half of the distance between the snout and the 

 vertical from the origin of the dorsal fin. The maxillary extends 

 beyond the orbit in the adult fish (15-20 inches long). The eye is 

 less than one-half of the interorbital space in the adult fish. The 

 length of the pectoral fin is, in mature and immature specimens, more, 

 or much more, than one-half of the distance of its base from the root 

 of the ventral. Dorsal rays fourteen ; the length of the longest ray 

 equals that of the pectoral, or that of the head without the snout ; 

 the length of the last ray is two-thirds of the length of the base. 

 190 transverse series of scales above the lateral line. Vertebras 62. 

 Teeth of moderate size. 



Pyloric appendages 4 1 . Specimens from 10-12 inches long are 

 still immature. The stomach of one contained numerous very small 

 freshwater bivalves. 



e. Salmo grayii. 



The Earl of Enniskillen has sent several very fine specimens of 

 this species from Lough Melvin for the collection of the British 

 Museum ; they were all males, and perfectly like, even in size, those 

 from which I have taken my description. A few of them showed 

 the red of the belly of a deeper hue than the individual figured. A 

 female fish, however, has been discovered among a collection of Sal- 

 tnonidce. purchased of Mr. Stevens : this specimen does not difi"er 

 from the males ; but the colours have disappeared, the specimen 

 being preserved in spirits. The eggs are of the size of a hemp-seed. 



The number of pyloric appendages is thirty-seven ; and that of 

 the gill-rakers of the lower branch of the outer branchial arch varies 

 from nine to thirteen. 



f. Salmo coin, n. sp. The Charr of Lough Eske. (PI. 11.) 



In the former paper on Charrs (p. 53), I mentioned several Irish 

 specimens, the property of the Museum at Belfast, said to be perhaps 

 from Lough Melvin. I then doubted the accuracy of the " habitat," 

 as those specimens, although allied to the Charr of Lough Melvin, 

 differed in several not unimportant points from the types, and as 

 they evidently belong to a very small species which is mature at a 



