Revision of the Irish Char. 



231 



Three char from Lough Mask, recently presented to the 

 British Museum by Alick Duncan, Esq. (2), and Godfrey 

 Allen, Esq. (1), measure 240 to 260 mm. in total length. 

 In them I count 8 or 9 branched rays in the dorsal fin, 7 or 8 

 in the anal, and 148 to 166 scales in a longitudinal series. 

 In one of them the vertebras number 62. The gill-rakers are 

 rather shorter than in S. colli from other localities, the 

 longest measuring ^ the diameter of the eye. 



In a single small specimen ( ? ) from Lough Inagh, 

 150 mm. in total length, I count 10 branched rays in the 

 dorsal fin, 7 in the anal, 1G0 scales in a longitudinal series, 

 and 14 gill-rakers on the lower part of the anterior arch. 

 The longest gill-rakers are nearly equal to } 2 tue diameter of 

 the eye. 



4. Salvelinus grayi. 



Sfilmo grayi, Giinth. Proc. Zool. Soc. 1862, p. 51, pi. vii., 1863, p. 12, 

 and Cat. Fish. vi. p. 136 (1866) ; Day, Fish. Britain, p. 114, pi. cxix. 

 fig. 1 (1884). 



Depth of body 3^ to 4 in the length, length of head 4 to 4f. 

 Snout subcorneal, with upper profile decurved anteriorly, 

 longer than eye, the diameter of which is 4^ to 5 in the 

 length of head. Interorbital region convex, its width 3 in 



Fisr. 4. 



Salvelinus grayi (after Giiutherj. 



the length of head. Dentition feeble; jaws equal anteriorly; 

 maxillary extending nearly to below the posterior margin of 

 eye or a little beyond, its length 21 to 2\ in the length of 

 head; lower jaw pointed anteriorly, its length 1^ to 1§ in 



