720 



APPENDIX. 



[No. VI. 



shape. The anal fin is slightly longer than the pectoral, and its tip, when turned 

 back, reaches to the base of the caudal. Its rays are very strong; the posterior one 

 is divided almost to its base. The caudal fin is linear-cuneiform, forked not quite to 

 half its length, with its lobes rather obtuse, and the lower one slightly larger than 



the upper one. Its rays are strong. The rays of all the fins are articulated and 

 branched at their tips. 



B. 3. P. 17. D. 13. V. 10. A. 7. or 8. C. 18|. 

 The dimensions of an ordinary-sized fish are as follow ; 



Length from snout to caudal fin, eighteen inches. 

 Length of the caudal, anal, and pectoral fins, each about three inches. 

 One of the specimens I examined had some fragments of a shell in its gut, but 

 soft insects seem to compose the greater part of the food of this fish. 



* 



Catastomus For steri anus. 



Red*Sucker of the Traders, Meethqua-maypeth, Cree Indians. 



Gen. Cyprinus, L. Catastomus, Le Sueur. Sub-genus Lenciscus. Cuv. Reg. An. p. 194. 



Cyprinus, Catastomus, Var. Forst. Philos. Trans, vol. lxiii., p. 158. 



Mithomapeth. Pennant's Arctic Zoology, Introd. p. ccxcix. 



Body. — The shape of this fish bears a general resemblance to that of the preceding 

 species, but the back is broader and straighter, and the depth less, scarcely exceeding 

 the thickness of the body, and being about one-fifth of its length. The body tapers 

 gradually from the shoulder to the origin of the caudal fin. The sides and back are a 

 little flattened. 



The lateral line runs on a level with the eye straight to the tail, without curving 

 upwards over the anal fin. 



The colour of the back is intermediate between honey-yellow and oil-green ; the 

 sides are lighter, and along the lateral line there is a broad irregular stripe, or rather 

 a series of indeterminate patches of light lake red. The belly is white. The anal 

 and ventral fins are slightly tinged with ochre yellow. The other fins partake of the 

 colours of the parts to which they are attached. 



The scales are oval, very considerably smaller than those of the preceding species, 



and, being entirely covered by a thin membrane, have little lustre; they are very 

 small behind the occiput and on the anterior parts of the body, but become larger 



towards the tail. 



The head is broader than in the preceding and following species. The forehead is 

 not rounded or convex, and the nose is longer and more acute. The head is about 



one-fourth of the length of the body, reckoning from the gill-openings to the 

 caudal fin. 



The eye, small and oval, is placed about its own length nearer to the gill-openings 



