Lac de Marbre Trout; Marston Trout 



elevated than in the other species of charrs, the dorsal outline 

 regularly but not strongly curved; head smaller than in any other 

 trout, its upper surface flattish; mouth quite small, the maxillary 

 short and moderately broad, scarcely reaching posterior edge of 

 orbit; jaws about equal; scales small, those along the lateral line 

 somewhat enlarged; pectoral and ventral fins not elongate; caudal 

 fin well forked, in small ones more so than in other species, but 

 more nearly "square" in large individuals; no concentric striae on 

 opercles. Colour, dark blue, the round red spots much smaller than 

 the pupil, and usually confined to the sides of the body; sides 

 with traces of dark bars; lower fins variegated, as in 5. fontinalis. 



In lakes of Arctic America, about Discovery Bay and Cumber- 

 land Gulf, is found another charr, Salvelinus oquassa naresi 

 (Giinther), usually regarded as a subspecies of the Oquassa trout, 

 from which it does not differ greatly. It reaches a length of a 

 foot or more. Nothing is known of its habits. Colour, green- 

 ish above, sides silvery or deep red, with very small red spots, 

 much smaller than the pupil; lower fins deep red, the anterior 

 margins yellowish white; dorsal fin reddish posteriorly. 



Lac de Marbre Trout ; Marston Trout 



Salvelinus marstoni Carman 



This interesting charr was described in 1893 by Professor 

 Samuel Garman, from specimens sent him from Lac de Marbre, 

 Ottawa County, Province of Quebec. 



The distribution of this trout has not been determined. If it 

 is identical with the so-called red trout of Canada, as seems prob- 

 able, it will doubtless be found in most of the suitable waters 

 north of the St. Lawrence and tributary to it. Besides the speci- 

 mens which Professor Garman had from Lac de Marbre, which is 

 near Ottawa, t other examples have been obtained from one of 

 the lakes of the Laurentides Club in the Lake St. John district, 

 others from Lac a Cassette, in Rimouski County, only a few miles 

 from the St. Lawrence, and, more recently, many fine examples 

 were secured by Mr. J. W. Titcomb from Lake Saccacomi and 

 the Red lakes in Maskinonge County, township of St. Alexis des 

 Monts, Quebec. 



These red trout were at first thought to be bottom feeders, 

 and that they would not rise to the fly, but they are now known 



218 



