192 OBERHOLSER ox a New Marsh Wren. Aga 
mentioned by Professor Baird,! but was apparently not considered 
as a subspecific distinction. 
The summer specimens of Cistothorus p. plesius are all in much 
worn plumage, but indicate what is borne out by the two spring 
birds at hand, — that fall birds are, as would be expected, darker 
and more richly colored, although among the fall specimens there 
exists considerable individual variation, particularly in the brown 
colors of the upper parts. 
A fall specimen from South Edmonton, inertia, and one from 
Fort Brown, Texas, are much brighter tawny above than any of 
the others examined, but are both very much paler than fadustrs. 
One example from Fort Klamath, Oregon (U.S. N. M. No. 
94757, Aug. 12, 1883), is rather intermediate between f/es7ws and 
paludicola, but is perhaps best referred to the former. A Novem- 
ber specimen from the same locality is, however, quite typical of 
plesius, having very probably migrated thither from the interior. 
A bird from Fort Crook, Calif., taken on March 31, is quite typical 
of the present race, and doubtless represents the breeding form at 
this place, since at Eagle Lake, Calif., which lies in a similar and 
neighboring region, C. p. plesius has been taken during the 
summer season. A specimen from Caribou Road, British Colum- 
bia, is not perfectly typical of the present subspecies, but some- 
what approaches fa/udicola in the generally duller and rather 
darker shades of the upper parts. In Arizona and adjacent parts 
of Mexico there not infrequently occur fall examples which in 
depth of color are clearly intermediates verging towards paludicola ; 
but such are usually somewhat nearer the Great Basin form. 
Although no Colorado specimens have been examined, P/eszis 
undoubtedly extends eastward as far as the Rocky Mountains. 
Whether or not this form breeds in Texas remains yet to be 
ascertained, as the only specimens at hand are evidently migrants. 
Very typical examples of p/eszus have been taken at Miraflores, 
Lower California, and at Mazatlan, in the State of Sinaloa, 
Mexico, but these excepted, there are available none from Mexico 
south of the United States Boundary Line. The Long-billed 
Marsh Wren has been recorded by Mr. Sclater from Tomatlan, 
1 Baird. Brewer and Ridgway, Hist. N. Am. Land Birds, I, 1874, 162. 
Sway 
