420 University of California Publications in Zoology. (Vous 
is not uniform all the way from Dixon Entrance to Kadiak 
Island. The forested region south of Lynn Canal is largely 
dominated by the Canadian life zone, and to it should be re- 
stricted the term “‘Sitkan district.’’? The forested coast belt 
from Lynn Canal and Cross Sound to the Alaska Peninsula is 
purely Hudsonian, but not to be considered a part of the Yukon 
faunal district as intimated by Osgood. It appears to be divis- 
ible into distinct faunal areas as follows: Yakutat Bay district, 
Prince William Sound district, Cook Inlet district, and Kadiak 
district. Too little work has been done in the Yakutat Bay dis- 
trict to warrant a discussion of its relationship further than to 
assert that, from what is known, it is more nearly like the Prince 
William Sound district than the Sitkan district. The former, 
as shown by the comparative lists of component species given 
beyond, although of the Hudsonian zone, is quite distinet from 
the Yukon district. 
Absence of satisfactory data prevents a comparison of the 
avifauna of the Prince William Sound district with that of the 
Cook Inlet district or with that of the Yakutat Bay district. 
But enough is known of the Sitkan and Yukon faunas to 
warrant the following comparisons. It is almost superfluous for 
me to urge that the status here given to any species is of neces- 
sity tentative. Not until field work has been carried on through- 
out the year in representative localities, as by Nelson at St. 
Michaels, can we be certain of the seasonal and distributional 
status of each of the birds in the respective faunas. 
The water-birds are of little service in characterizing the 
avifauna of Prince William Sound. With the exception of 
Ardea herodias fannini and Branta canadensis occidentalis, the 
species are either transients, or of wide distribution. The two 
exceptions are characteristic species of the Sitkan district, and 
do not oceur in the interior of Alaska, nor much further to the 
westward along the Pacific Coast. 
3. Prince Wilham Sound birds which are believed to be 
merely transients from the Yukon district: 
Circus hudsonius Zonotrichia coronata 
Falco columbarius Dendroica coronata hooveri 
Calcarius lapponicus alascensis Penthestes atricapillus turneri 
