SUCKLEY MONOGRAPH OF THE GENUS SALMO. 95 



the caudal. Intermaxillary prolongation strongly decnrved, and armed 

 with large hooked teeth. Under jaw armed with a dilated and slightly 

 incurved knob, similarly provided with strong teeth. The teeth oa the 

 sides of both jaws are strong, and very irregular in size or disposition, 

 fiud extend almost to the angle of the commissure. Teeth on the vomer, 

 present or absent, varying in this respect in different specimens. Cau- 

 dal fin moderately lunated, the degree varying according to age. 



Colors. — In recent specimens fresh from the sea we fiud a silvery luster; 

 not, however, as strongly marked as in the S. gairdneri, S. quinnat, and 

 other species. The ground-color of the back is lead-color or a silvery 

 blue, and that of the belly white or yellowish white. The back and sides, 

 ; dorsal fin, and tail are unspotted. 



Female. — The fresh run females differ in having symmetrical jaws, 

 ■ destitute of elongated intermaxillary, or of the incurved knob on the 

 j lower jaw. 



i Diagnosis. — The male may be known from all but the other hook- 

 i billed species by having the long decurved intermaxillaries and cartilag- 

 iinous snout extending considerably beyond the point of the lower jaw; 

 by its large irregular teeth on the maxillaries: From the S.proteus and 

 B. dennatiiius, by having less of a dorsal hump; by the marked lapping 

 of the scales, and by having an unspotted caudal fin. The teeth along 

 the maxillaries are also not awl-shaped and uniform as in S. proteus., 

 being more frequently alternately large and small. They are also less 

 numerous. The female may be recognized from those of most of the 

 other species. 



[ Habitat. — racitic coast; anadromous; enters fresh-water rivers 

 jin autumn. 



Spec. 112!> Smiths. Coll. has a less number of rows of scales both above 

 and below the lateral line, than has E"o. 1130. This may be owing to sex, 

 or perhaps species. In many respects the fish agree very well. ^o. 1130, 

 however, has the tongue and vomer toothless. May not this be the re- 

 sult of age? If not, and the fish prove to be distinct, which shall be 

 considered newf or which H. hjcaofJon, Pallas, A'. eons7(ctus, Eich., or 

 8. scouleri, Eich ? 



It would be very easy to take up one of these specimens and impose 

 a name upon it, and, ergo, an additional incubus upon the study of the 

 [fiimily. But I refrain. A few years will probably bring us plenty of speci- 

 mens from the waters of the Xorth Pacific, on both sides. Then, and not 

 'till then, can the synonymy of the hooked-snout, big-toothed, and round- 

 backed species be properly determined. This is an exceedingly abun- 

 idant species on the northwest coast, and affords the principal salmon 

 harvest to the Indians, who dry vast numbers for winter use. It usually 

 commences to run up the streams which empty into Puget Sound about 

 the first week in September, and continues to arrive until near Christmas. 

 During the months of January, February, and March, they are found 

 [abundantly in small shallow brooks and streams tributarv to the larger' 



