ttata_ in the Sierra del Carmen. Hellmayr (1934:456)
listed _H. g. auduboni_ from Sabinas.

**_Sialia sialis fulva_ Brewster.--Hellmayr (1934:479) listed this
subspecies of the Eastern Bluebird from Sabinas.

*_Sialia mexicana mexicana_ Swainson.--Miller, Friedmann, Griscom, and
Moore (1957:199) remarked that the subspecies _mexicana_ of the Western
Bluebird breeds in the southern mountains of Coahuila where, at El
Diamante, on July 7, a specimen (or specimens ?) in breeding condition
was obtained. Burleigh and Lowery (1942:200) found _S. m. mexicana_
"well distributed in the open woods about" Diamante Pass, but at no
time below an elevation of approximately 6500 feet. Sutton and Burleigh
(1939a:38) also saw "several brown-backed" Western Bluebirds at
Diamante Pass on March 6. Ridgway (1907:150) recorded _S. m. mexicana_
from Saltillo, Carneros, and Sierra Guadalupe.

_Sialia currucoides_ (Bechstein).--_Specimen examined:_ one, [Female]
31078, from Sierra de la Encantada (=38 mi. S, 23 mi. E Boquillas),
4400 ft., March 14, 1952, weight, 23.7 gms.

The Mountain Bluebird is a winter visitant to Coahuila. Miller,
Friedmann, Griscom, and Moore (1957:200) recorded _Sialia currucoides_
from Hipolito on February 24.

**_Myadestes townsendi townsendi_ (Audubon).--_Specimen examined:_ one,
[Female] 31079, from 26 mi. W Santa Teresa, 7050 ft., April 4, 1952.

Miller (1955a:171) detected Townsend's Solitaire in clumps of large
pines in two different locations at 7000 and 7500 feet on April 4, 6,
and 8 in the Sierra del Carmen. He did not find a breeding population
of _M. t. townsendi_, but did note favorable habitat for breeding.
Ridgway (1907:164) recorded _M. townsendi_ from the Sierra Guadalupe on
April 21. Dickerman saw a Townsend's Solitaire in the Sierra de la
Madera on December 13, 1953.

The underparts of No. 31079 are not uniformly dark, being paler on the
chin, throat, and abdomen than elsewhere as is true of typical
representatives of _M. t. townsendi_.

**_Polioptila caerulea caerulea_ (Linnaeus).--_Specimen examined:_ one,
[Male] 32097, from 2 mi. S, 11 mi. E Nava, June 15, 1952.

No. 32097 is the first record of occurrence of this subspecies of
Blue-gray Gnatcatcher in the State. The white of the underparts of No.
32097 is less grayish than the underparts of typical representatives of
_P. c. amoenissima_, and the black at the base of the inner webs of the
outermost rectrix does not extend beyond the tip of