al. Burleigh and Lowery (1942:198) recorded a _cahooni_-like
specimen from Diamante Pass in southern Coahuila.

**_Troglodytes brunneicollis compositus_ Griscom.--_Specimen examined:_
one, [Male] 32819, from 13 mi. E San Antonio de las Alazanas, July 6,
1955.

The subspecies _cahooni_ and _compositus_ of the Brown-throated Wren
seem to intergrade in the southern part of the State. Although No.
32819 represents the subspecies _compositus_, the somewhat whitish
abdomen and the fairly large spots of the lesser wing coverts suggest
some relationship with _cahooni_. In addition to the present record,
Miller, Friedmann, Griscom, and Moore (1957:163) recorded _T. b.
compositus_ from southern Coahuila at Sierra Guadalupe. The record of
_T. b. cahooni_ from Sierra Guadalupe (Ridgway, 1904:588) I suspect
probably represents _T. b. compositus_ or an intergrade between
_compositus_ and _cahooni_. The date (July 6) on which No. 32819 was
obtained 13 mi. E San Antonio de las Alazanas suggests that this bird
was resident there.

*_Thryomanes bewickii eremophilus_ Oberholser.--_Specimens examined:_
total 3: [Male] 32088 from 2 mi. W Jimenez, 850 ft., June 20, 1952;
[Female] 31061 from 4 mi. W Hacienda La Mariposa, 2300 ft., March 24,
1952, weight, 10.8 gms.; and [Male] 31660 from the north foot of Sierra
Guadalupe (=10 mi. S, 5 mi. W General Cepeda), 6500 ft., April 21,
1953, weight, 13 gms.

Bewick's Wren occurs commonly in Coahuila. Miller, Friedmann, Griscom,
and Moore (1957:160) reported that, in Coahuila, _T. b. eremophilus_
"intergrades in the eastern and southern sections with _T. b. cryptus_
and _T. b. murinus_, respectively." The slightly darker coloration of
No. 31660, suggesting a resemblance to _T. b. murinus_, is the only
evidence of intergradation of _T. b. murinus_ and _eremophilus_ that I
have found.

Miller (1955a:170) stated that _T. b. eremophilus_ was "common in the
piedmont area on yucca-dotted slopes and along the lower canyon walls
in growth of pinon, yucca, and cactus" in the Sierra del Carmen, and
reported breeding there. Burleigh and Lowery (1942:198) remarked that
_T. b. eremophilus_ "proved without question to be the most widely
distributed and abundant wren" in the Saltillo region. The series that
Burleigh and Lowery (_loc. cit._) assembled "proved to be uniform and
clearly referable to" _T. b. eremophilus_. Sutton and Burleigh
(1939a:36) noted _Thryomanes bewickii_ at San Pedro on January 29 and
30.