78 PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 



l8o6—Salar virginaUs GiRARD.Proc. Ac. Nat. Sc. Phila. viil,p. 220, 1850. 



Salar virginaUs Gihard, Pac. R. R. Expl. Fishes, p. 320, 1858. 



Salmo (Salar) virgina'is Suckley, Nat. Hist. Wash. Terr. p. —, 1860. 



Salmo virginaUs Gunther, Cat. Fishes Brit. Mus. vi, p. 123, 1867. 



Salmo virginaUs CoPE, Hayden, Geol. Surv. Montana, 1871, p. 469, 1872. 



Salmo virginaUs Suckley, Monograph Genus Salmo, p. 135, 1874. 



Salmo virginaUs Cope &. Yarrow, Zool. Lieut. Wheeler's Expl. W. 100th Mer. 

 p. — , 1876. 



Salmo virginaUs Jordan & Copeland, Check List, p. 144, 1876. 

 IS72— Salmo carinat-us Cope, Hayden's Geol. Surv. Montana, 1871, p. 471, 1872. 



Salmo carinatus Jordan & Copeland, Check List, p. 144, 1876. 

 lS7iSalmo tttah Suckley, Monograph Genus Salmo, p. 136, 1874. 



Salmo Utah Jordan & Copeland, Check List, p. 144, 1876. 



Examination of a very large series of the Salars with hyoid teeth has 

 convinced the writer that all (excepting S. stomias and S. henshaici) be- 

 long to a single species, although two, and possibly three, or even four 

 subspecies or varieties may be distinguished. For this species the 

 name Salmo clarki is the name to be retained, as almost the only import- 

 ant character which Eichardson was able to assign to this species is 

 that of the patch of teeth on the hyoid bone. No other species of this 

 group possessing this character is as yet known from the Columbia. 



Specimens examined from Utah, from the Rio Grande, from the head- 

 waters of the Missouri, Yellowstone, Platte, and Snake Rivers, as well 

 as the types of Fario aurora from the Columbia, possess much smaller 

 scales than typical clarki (i. e., stellatus Grd.). These may be really spe- 

 cifically distinct, but intermediate specimens occur; and until this Rocky 

 Mountain species can be better defined as distinct from the Columbia 

 River species, it is best to consider it as var. aurora of the latter. 



The typical specimens of Fario stellatus Girard are still preserved. 

 I consider them as typical of Salmo clarlci. This perfectly distinct 

 species is almost the only one described by previous writers, which Dr. 

 Suckley ventured to discard, he confounding it with S. irideiis, yet of 

 all our species of Salar, irideus and clarJci (stellatus) are technically the 

 most distinct. 



The types of S. hrcvicauda Suckley are still preserved, but are almost 

 decayed. One of them is certainly a clarJci, probably sea-run; the other 

 is past recognition. 



The types of Fario aurora are still preserved in the same condition 

 as when first described and figured. They are well kept as to the 

 bodies, but the scales are all rubbed off, an accident apparently not 

 noticed by Dr. Girard 's artist, which accounts for the peculiar squama- 

 tion shown in the published figure. These specimens are young, and 

 very chubby ; but as they have hyoid teeth and show no points of dis- 

 tinction from S. lewisi Grd., I identify them as belonging to the same 

 species. The remarks of Dr. Suckley on the description of such speci- 

 mens as new species are so pertinent that I will quote them here. They 

 would perhaps have sounded better, however, if he himself had sup- 

 pressed his own Salmo icarreni, Salmo gibhsli, and other more or less 

 purely complimentary species. 



