rch 16,
1952; [Male] 32070 from 12 mi. N, 12 mi. W Jimenez, 850 ft., June 19,
1952; [Female] 32071 from 2 mi. W Jimenez, 850 ft., June 20, 1952;
[Male] 35413 from 6 mi. N, 2 mi. W Castillon, 3750 ft., June 30, 1953;
[Male] 32072 from 9 mi. S, 11 mi. E Sabinas, June 14, 1952; [Female]
31584 from 17 mi. S Ocampo, 5300 ft., April 7, 1954; and [Male] 31673
from the west foot of Pico de Jimulco, 5000 ft., April 4, 1953.

The Ash-throated Flycatcher is common in Coahuila. All specimens
examined by me from there are typical of _M. c. cinerascens_. Ridgway
(1907:626) listed _M. c. cinerascens_ from Monclovia (=Monclova?) and
Sabinas. Miller (1955a:166) found the species "only in the oak belt at
5000 feet, where it was common." Burleigh and Lowery (1942:193)
recorded _M. c. cinerascens_ from "near Saltillo." Dickerman obtained
No. 31584 in a mesquite-grassland-shrubby area. Miller, Friedmann,
Griscom, and Moore (1957:78) stated that _M. c. cinerascens_ breeds in
Coahuila.

_Sayornis phoebe_ (Latham).--Miller, Friedmann, Griscom, and Moore
(1957:66) recorded the Eastern Phoebe from Coahuila on November 4-14.

*_Sayornis nigricans semiatra_ (Vigors).--_Specimens examined:_ total
2: [Female] 31046 from 1 mi. N Boquillas, 700 ft., March 7, 1952; and
[Female] 31047 from Fortin (=33 mi. N, 8 mi. W San Geronimo), 3300 ft.,
March 27, 1952.

Of the Black Phoebe, the two subspecies _semiatra_ and _nigricans_
intergrade in Coahuila. Typical representatives of _S. n. semiatra_ are
present in northern Coahuila. The under tail coverts of Nos.
31046-31047 are immaculate and white. Miller (1955:167) noted the two
specimens collected from the Sierra del Carmen to have narrow dark
shaft streaks on the under tail coverts. He (_loc. cit._) remarked also
that "the marking of the under tail coverts may indicate a beginning of
a gradient in increased darkening of these feathers toward _S. n.
nigricans_ in southern Coahuila."

*_Sayornis nigricans nigricans_ (Swainson).--Burleigh and Lowery
(1942:193) collected several specimens of _S. n. nigricans_ "on the
outskirts of Saltillo" and saw a pair at the Chorro del Agua on April
19.

*_Sayornis saya saya_ (Bonaparte).--_Specimens examined:_ total 4:
[Female] 31049 from the Rio Grande (=17 mi. S Dryden, Terrell Co.,
Texas, in Coahuila), 600 ft., March 18, 1952; sex ? 31048 from 10 mi. S,
5 mi. E Boquillas, 1500 ft., March 4, 1952; [Male] 31050 from Fortin
(=33 mi. N, 8 mi. W San Geronimo), 3300 ft.