148 ROYAL SOCIETY OF CANADA 



these modifications. The stock of the (iiand Casoapedia, Xuuvi'lle and 

 Grand Pabos have the anterior rays shortened and tlie margin either 

 straight or more frequently convex, while the lake form from New 

 Brunswick, Lake Metapedia, P.Q., and the Little Cascapedia, shows a 

 concave margin with anterior rays produced. A short description of 

 tliese two varieties may be given here. 



(a) C. plumheus, (Junther. 



Size large, lieavy anteriorly ; back slightly arched ; head broad and 

 flattish, its profile nearly straight ; dorsal insertion a little anterior to 

 last ray of ventral, midway between front of orliit and base of caudal. 

 Moutli moderate ; barbel evident ; lateral band distinct. Dusky olive 

 above, sides dull silvery, a^ils of paired fins and angles of mouth red. 



Head, 4^ ; depth, 4^. D. 8, A. 8. Scales 11-62-7. Lengtli about 

 G inches. 



Lake Metapedia and river ; Little Cascapedia, and throughout 

 New Brunswick. Though agreeing in the main, the Little Cascapedia 

 plumheus shows some evidence of being a form intermediate between the 

 lake variety and the one next to be described. The head is not so 

 broad, and is more pointed. Dorsal insertion more posterior (midway 

 between snout and base of caudal), with the hinder rays shorter, hence 

 its margin more oblique. Tail very emarginate. Eye large. Lateral 

 band dusky. Size smaller. A handsome fish, 



(b) C. plumheus, Gnthr. var. 



Size moderate, stoutish ; head short, muzzle blunt, no barbel, 

 mouth and eye small ; vent more posterior than in any other form. 

 Fins all small. Dorsal insertion far back, behind last ray of ventral, 

 midway between snout and ends of middle rajs of caudal ; its anterior 

 rays shortened and free margin convex, its first rays equalling the last 

 when fin is depressed. Anal same form. Caudal peduncle short and 

 stout, hardly compressed, and fin less emarginate. 



Coloration brilliant. Back olive brown with tlie usual dark scales, 

 and passing into steel-l)lue. A blackish band from eye to caudal, with 

 a narrow pale one above; sides ^Ivery, with the region under the 

 lateral band and extending from the operculum to the base of the 

 caudal, almo-st scarlet in life. 



Head, 4^. Depth, 4:\. D. 8, A. 8. Scales. lt>-70-8. Length, 4 

 inches. A beautiful little fish which deserves recognition as a well 

 marked variety. 



This is the form which the lower Gaspé rivers, Nouvelle and Grand 

 Pabos, alone contain. It does not occur in New Brunswick. 



