n
September 2 at Jardin del Sur in Chuperosa Canyon in the Sierra del
Carmen. Burleigh and Lowery (1942:203) saw two individuals of
Townsend's Warbler at Diamante Pass on April 14. Amadon and Phillips
(1947:578) secured this species "in mesquite about twenty miles west of
Saltillo on August 28." Dickerman saw Townsend's Warblers in the Sierra
de la Madera on December 13, 1953; 20 mi. S Ocampo on April 4, 1954;
and 13 mi. E San Antonio de las Alazanas on April 10, 1954.

_Dendroica virens_ (Gmelin).--Dickerman saw one Black-throated Green
Warbler 13 mi. E San Antonio de las Alazanas, 9350 feet, on April 10,
1954, in a white pine-Douglas fir-aspen association. This seems to be
the first record of this species in Coahuila.

*_Dendroica chrysoparia_ Sclater and Salvin.--Miller, Friedmann,
Griscom, and Moore (1957:251) listed the Golden-cheeked Warbler from
Hipolito on July 3.

_Dendroica occidentalis_ (Townsend).--_Specimen examined:_ one, [Male]
31592, from 13 mi. E San Antonio de las Alazanas, April 10, 1954.

The Hermit Warbler seems to be an uncommon spring and probably fall
migrant in Coahuila. Miller, Friedmann, Griscom, and Moore (1957:252)
reported _D. occidentalis_ from the State. No. 31592, whose testes were
not enlarged, was obtained in a pine-spruce-aspen association.

_Geothlypis trichas brachidactylus_ (Swainson).--Miller, Friedmann,
Griscom, and Moore (1957:261) listed this subspecies of the
Yellowthroat as recorded from Coahuila.

_Geothlypis trichas occidentalis_ Brewster.--Burleigh and Lowery
(1942:204) found the Yellowthroat "only on the outskirts of Saltillo,
where ... [this species] was not uncommon in the thickets, especially
around a small stand of marsh grass bordering a pond." Three males that
Burleigh and Lowery (_loc. cit._) obtained were tentatively identified
as _G. t. occidentalis_. Dickerman saw one male Yellowthroat at San
Marcos (=20 mi. S Cuatro Cienegas) on May 4, 1954.

_Geothlypis nelsoni nelsoni_ Richmond.--Burleigh and Lowery (1942:204)
noted the Hooded Yellowthroat "only on the open slopes above the summit
of Diamante Pass at an elevation of about 8,000 feet" where they
obtained an adult male.

*_Icteria virens virens_ (Linnaeus).--_Specimens examined:_ total 3:
[Male] [Male] 32105-32106 from 12 mi. N, 12 mi. W Jimenez, 850 ft.,
June 19, 1952; and [Female] 32107 from 2 mi. W Jimenez, 850 ft., June
20, 1952.

From the paucity of records in the literature, I judge that the
Y