Char of Great Britain. 



115 



lower jaw pointed anteriorly, its length If-l^ ((?) or 1|-1| 

 ( ? ) in the length of head. 10-11 branchiostegals. 13-16 

 Blender gill-rakers on the lower part of anterior arch. 156- 

 188 scales in a longitudinal series. Dorsal with 9 or 10 

 branched rays, its origin a little nearer to the tip of snout 

 than the base of caudal, the longest ray 3_2 the length of head. 

 Anal with 8 or 9 branched rays. Pectoral |-4 the length of 

 head, extending | to more than | ( c? ) or f ( ? f of the distance 

 trora Its base to the base of pelvics. Least depth of caudal 

 peduncle li-2 in its length and J-f the length of head. Dark 

 greenish^ above, silvery or orange below; sides with orange 

 spots; fins more or less dusky, the lower fins tinged with 

 orange and with pale anterior margins. 



Lakes of Llanberis, Carnarvonshire, North Wales. 

 The above description is based on the types of the species, 

 twelve examples, 180-235 mm. in total length. 



The following five species of Char are so distinct from 

 each other and from the ones described above tliat I have 

 little hesitation in describing them as new. 



1. Salvelinus gracilUmus, sp. n. 

 Depth of body 5i to ^ in the length, length of head 4 to 

 42. bnout obtuse, as lung as or a little longer tlian eye, the 

 diameter of which is 4^ to 5 in the length of head. Inter- 

 orbital region^ nearly flat, its width 3^ in the le.:gth of 

 Head. Dentition moderate ; jaws equal anteriorly ; maxillary 



Fis. 2. 



a, J 



rt. Salvelinus gracilUmus. b. S. lonsdalii. c? s", natural size. 



extending to below the posterior part of eye, its length 22 

 to 2^ in the length of head; lower jaw somewhat pointed 

 anteriorly, its length from less than f, to | the length of head. 

 "■"" "^""" ■ 12 01' 14 moderately elongate gill-rakers 



9 branchiostegals. 



