250 University of California Publications in Zoology [Vol. 24 



Flood Glacier juneos to shufeldti, I decline to consider them as of that 

 subspecies, or to call them by that name. This despite Dr-. Dwight's 

 belief that "we must name a bird by the plumage it is wearing not 

 by the one that it ought to be wearing because it has been captured 

 within the bounds assigned to another geographical race" (1918, 

 p. 294). 



Flood Glacier is close to the point where the change in the character 

 of the country takes place, between the ■ humid coast and the arid 

 interior. It is the uppermost point on the river reached by certain 

 coastal species of birds ; very few indeed go any farther inland. Not 

 many inland species extend farther down the river. We took here 

 specimens of typical conneden^ and of oreganus, besides these inter- 

 mediates. Forty miles up stream nothing but connectens was seen. 

 Thirty miles farther down the river, at Great Glacier, nothing but 

 typical oreganus. 



In view of these facts it seems to me that these few specimens of 

 indeterminate character, taken practically on the boundary line be- 

 tween the habitats of the two forms, may be regarded as veritable 

 hybrids between the two. They are certainly not indicative of inter- 

 gradation as it usually appears between closely related subspecies. 



The seven juvenals from Flood Glacier naturally offer difficulties 

 in their allocation such as are not encountered in adults. Young of 

 connectens taken early in the season in the upper Stikine Valley, 

 compared with the corresponding stage of oreganus from the coast, 

 present certain obvious differences. As the juvenal feathers become 

 faded and abraded, however, these distinctions are much less apparent, 

 and the young birds from Floofl Glacier had worn the juvenal plumage 

 to the molting time. Those that do show specific peculiarities all lean 

 toward oreganus, and one or two, otherwise indeterminable, were taken 

 in company with an adult female oreganus. There are available but 

 very few breeding specimens of slate-colored junco from Alaskan 

 points. These specimens on the whole look more like eastern hyemalis 

 than like Stikine River connectens. The only breeding females, one 

 from Cordova Bay and one from Eapids, Yukon River, are quite 

 unlike any females in the Stikine series. 



I have had for examination a series of seventeen adult juneos, 

 eight males and nine females, from the collection of the Provincial 

 Museum, Victoria, British Columbia, taken at Atlin, during June and 

 July, 1914. Atlin is at the northern boundary of British Columbia, 

 about one hundred and fifty miles north of Telegraph Creek. For the 



