und color of
their backs is grayish buff.

_Spizella pallida_ (Swainson).--The Clay-colored Sparrow is a migrant
or winter visitant in Coahuila. Burleigh and Lowery (1942:209) saw
"large flocks of sparrows, mostly of this species, ... on frequent
occasions in the cultivated fields and orchards on the outskirts of
Saltillo." Four specimens were taken by Burleigh and Lowery (_loc.
cit._) on April 19 and 20 at Saltillo.

_Spizella breweri breweri_ Cassin.--_Specimens examined:_ total 2:
[Female] 31115 from the Rio Grande (=17 mi. S Dryden, Terrell Co.,
Texas, in Coahuila), 600 ft., March 18, 1952, weight, 8.2 gms.; and
[Male] 31114 from 28 mi. S, 11 mi. E Boquillas, 2000 ft., March 12,
1952, weight, 9.7 gms.

Brewer's Sparrow is probably a winter resident in much of Coahuila.
Miller, Friedmann, Griscom, and Moore (1957:389) recorded _S. b.
breweri_ from 25 mi. NW Monclova on November 20 and from 8 mi. S Cuatro
Cienegas on November 15. The only definite records obtained by Burleigh
and Lowery (1942:209) of _S. b. breweri_ are those of a female and a
male taken "near Saltillo" on April 16 and 18. The size of the dorsal
area of sandy buff with narrow streakings of Nos. 31114-31115 suggests
_S. b. breweri_.

_Spizella pusilla arenacea_ Chadbourne.--_Specimen examined:_ one,
[Male] 31116, from 4 mi. W Hacienda La Mariposa, 2300 ft., March 24,
1952, weight, 13.1 gms.

The Field Sparrow is an uncommon spring and probably fall migrant in
Coahuila. Other than No. 31116, _S. p. arenacea_ has only been recorded
from Sabinas in March, when three specimens were obtained (Miller,
Friedmann, Griscom, and Moore, 1957:390). The coloration of No. 31116
is much grayer and the black streaks on its back are much narrower than
on typical representatives of _S. p. pusilla_.

**_Spizella wortheni wortheni_ Ridgway.--The single specimen of
Worthen's Sparrow obtained by Burleigh and Lowery (1942:209) "just
outside the limits of Saltillo on April 16" represents the only record
of occurrence of this species in Coahuila.

**_Spizella atrogularis atrogularis_ (Cabanis).--Miller, Friedmann,
Griscom, and Moore (1957:391) remarked that the Black-chinned Sparrow
is a common resident of the Central Plateau from Durango and southern
Coahuila southward. Burleigh and Lowery (1942:212) noted the species
only at the foot of the mountains of southeastern Coahuila where, at
6000 feet, scattered pairs were found. Miller (1955a:177) observed a
male on Apri