232 Mr. C. T. Regan — A Preliminary 



the length of head. 9 to 12 branchiostegals. 12 to 15 gill- 

 rakers on the lower part of anterior arch, the longest ^ to \ 

 the diameter of eye. 128 to 162 scales in a longitudinal 

 series. Dorsal 12-15, with 8 to 10 branched rays, its origin 

 nearer to the tip of snout than the base of caudal, the longest 

 ray from § to as long as the head. Anal 11-14, with 7 to 9 

 branched rays. Pectoral | to 1| the length of head, ex- 

 tending § to ^Sg. of the distance from its base to the base of 

 pelvics. Least depth of caudal peduncle 11 to 1§ in its 

 length and \ or nearly \ the length of head. 59 or 60 

 vertebrae. Bluish black above, silvery below, sometimes 

 shaded with orange ; back and sides sometimes with small 

 pale spots ; fins dusky. 



Hab. Lough Melvin in Fermanagh. 



Here described from twenty-six examples, 210 to 260 mm. 

 in total length. 



Of the sixteen specimens in the British Museum only one 

 is a female ; this has the pectoral fin longer than the head. 



5. Salvelinus Jimbriatus, sp. n. 



Depth of body 4§ in the length, length of head 4?. 

 Snout subcorneal, with upper profile decurved anteriorly, as 

 long as eye, the diameter of which is A\ in the length of 

 head. Interorbital region flat, its width of in the length of 

 head. Dentition moderate ; jaws equal anteriorly ; maxillary 



Fig. 5. 



Salvelinus Jimbriatus. Head from above and from the side. 



extending to below the posterior margin of pupil, its length 

 2| in the length of head ; lower jaw pointed anteriorly, its 

 length nearly 1§ in the length of head. 10 branchiostegals. 

 18 or 19 gill-rakers on the lower part of anterior arch ; the 



