subspecies
of Cactus Wren seems to occupy the extreme southeastern section of
Coahuila. Miller, Friedmann, Griscom, and Moore (1957:152) recorded _C.
b. guttatus_ from Hipolito.

_Telmatodytes palustris plesius_ (Oberholser).--Miller, Friedmann,
Griscom, and Moore (1957:148) reported this subspecies of the
Long-billed Marsh Wren from 8 mi. S Cuatro Cienegas.

*_Catherpes mexicanus albifrons_ (Giraud).--Miller (1955a:170) found
this subspecies of Canyon Wren "in shaded rocky canyons and on larger
cliff slopes at the base of the mountains from 4700 to 5300 feet" in
the Sierra del Carmen where it nested. Burleigh and Lowery (1942:198)
noted that the Canyon Wren was "decidedly uncommon" at Saltillo and
obtained a male at the Chorro de Agua on April 19. Ridgway (1904:657)
listed _C. m. albifrons_ from Patos.

*_Salpinctes obsoletus obsoletus_ (Say).--_Specimens examined:_ total
4: [Female] 31067 from 1 mi. N Boquillas, 700 ft., March 6, 1952,
weight, 16.1 gms.; [Female] 31068 from 7 mi. S, 2 mi. E Boquillas, 800
ft., March 1, 1952, weight, 18.2 gms.; sex ? 29558 from 12 mi. N, 10
mi. E Parras, 5000 ft., November 11, 1949, weight, 16.9 gms.; and
[Male] 32089 from 7 mi. S, 4 mi. E Bella Union 7200 ft., June 24, 1952.

The Rock Wren is common in Coahuila. Miller (1955a:170) found _S. o.
obsoletus_ "only in the rocky piedmont and on lower bare canyon faces"
and stated that Marsh took a bird in fresh fall plumage on September 6
at El Jardin. Sutton and Burleigh (1939a:37) found the Rock Wren "near
San Pedro." Burleigh and Lowery (1942:198) wrote that the subspecies
_obsoletus_ was "characteristically a bird of the arroyos of the arid
plateau about Saltillo, where it was fairly common...." The large size
of the testes (5x3 mm.) of No. 32089 and the date (June 24) on which it
was obtained suggest breeding by the Rock Wren 7 mi. S and 4 mi. E
Bella Union.

*_Mimus polyglottos leucopterus_ (Vigors).--_Specimens examined:_ total
5: [Female] 31070 from 10 mi. S, 5 mi. E Boquillas, 1500 ft., March 5,
1952, weight, 55.1 gms.; [Male] [Male] 32094-32095 from 2 mi. W
Jimenez, 850 ft., June 20, 1952; [Male] 32096 from 5 mi. N, 19 mi. W
Cuatro Cienegas, 3250 ft., July 5, 1952; and [Male] 33186 (skeleton
only) from Parras, July 5, 1955, testes, 6x3 mm.

The Mockingbird is sparsely distributed throughout Coahuila. Miller
(1955a:170) found _M. p. leucopterus_ in the mesquite and catclaw at
the base of the mountains in the Sierra del Carme