362 ZOOLOGY. 



the anterior margin of the dorsal fin is nearer the extremity of the snout than the insertion of the caudal. Tip of pectoral; 

 reaching to the base of the ventrals ; tip of ventrals overlapping the vent, not extending quite to the anterior margin of the 

 anal. Yellowish brown, with a silvery, superiorly dusky, streak along the middle of the flanks. 



SYtf.—Gobioselidus, Gri;. in Proc. Acad. Nat. Sc. Philad. VII, 1856, )8S.— Ibid. Gen. Eep. Fishes, 248. 



Two specimens were obtained from Milk river. 



RICHARDSONIUS BALTEATUS, Cxrd. 



Steilacoom Killy. 



Plate LX, Figs. 1—4. 



Sp. Ch Head forming less than the fifth of the tot;il length. Snout sub-conical ; jaws even ; posterior extremity of 



maxillar bone extending to a vertical line drawn in front of the orbit. Eye large and circular, its diameter entering three 

 times and a half in the length of the side of the head. Anterior margin of dorsal fin equidistant between the extremity of 

 the snout and the fork of the caudal. Anal fin longer than deep and about as long as the head. Caudal fin constituting 

 about the fourth of the total length. Grayish black above ; silvery white beneath. Fins unicolor. 



Sts.—Cyprinus (Abramis) ballMlm, Eichabds. Faun. Bor. Amer. Ill, 1836, 301. — Stoker Synops. 1846, 160 



Richardsonius btUkalus, Grd. in Proc. Acad. Nat. Sc. Philad. VIII, 1856, 202.— Ibid. Gen. Rep. Fishes, 278. 



This fish is very abundant in the small fresh water lakes near Fort Steilacoom. It is readily 

 taken with the hook and line, and seems disposed to run in "schools." The flesh when cooked 

 is soft and insipid, and as the bones are so numerous and troublesome it is rarely eaten. 



RICHARDSONIUS LATERALIS, Grd. 

 Spotted Killy- 



Plate LX, Figs. 5—8. 



Sp. Ch. — Head constituting the fifth of the total length. Snout sub-conical ; jaws even ; posterior extremity of the 

 maxillary extending to a vertical line drawn behind the nostrils. Eye large and circular, its diameter entering nearly four 

 times in the length of the side of the head. Anterior margin of dorsal fin a little nearer the extremity of the snout than the 

 fork of the caudal. Anal fin deeper than long and much shorter than the head. Caudal fia entering four times and a half 

 in the total length. Blackish brown above ; metallic yellowish white beneath, with a black streak above the lateral line. 

 Fins unicolor. 



SYJi.—Richardsonius lateralis, Grd. in Proc. Acad. Nat. Sc. Philad. VIII, 1856, 202.— Ib.d Gen. Rep Fishes, 279. 



This fish is very plentiful in the same localities as the last mentioned species, of which it was 

 taken by me to be a variety, or as simply differing in age. In habits, &c., it is precisely similar 

 to the other. The colors given by Mr. Girard are those of fish which have been long in alcohol 

 and of course difi"er from those freshly caught. 



CHEONDA COOPERI, Grd. 



Vancouver Chnb. 



Plate LXIII, Figs. 1—5. 



Sp. Ch Body elongated, sub-fnsiform in profile. Head contained a little short of five times in the total length. 



Snout thickish, sub-conical, overlapping somewhat the lower jaw ; posterior extremity of the maxillar bone extending to a 

 vertical line drawn behind the nostrils. Eye well developed ; its diameter entering four times and a half in the length of 

 the side of the head. Fins well developed. Upper regions reddish gray ; sides and belly yellowish white with a metallic 

 reflect. 



SVN Cheonda cooperi, Grd. in Proc. Acad. Nat. Sc. Philad. VIII, 1856, 207.— Ibid. Gen. Eep. Fishes, p. 294. 



This much resembles several other kinds of fish of the Territory, called generally "suckers," 

 "bony fish," "carp," "red fin," &c., and like them all is considered poor food. It can easily 



