the under tail
coverts. Representatives of _P. c. amoenissima_ have black at the base
of the inner web of the outermost rectrix more extended, usually
showing beyond the tip of the under tail coverts. The size of the
testes (3x2 mm.) of No. 32097 does not suggest breeding, but the date
(June 15) indicates that it was a resident.

*_Polioptila caerulea amoenissima_ Grinnell.--_Specimen examined:_ one,
[Male] 31080, from 7 mi. S, 2 mi. E Boquillas, 800 ft., February 29,
1952, weight, 5.4 gms.

This subspecies of the Blue-gray Gnatcatcher breeds in Coahuila and
occurs throughout all of the State except the northeastern section.
Miller (1955a:171) remarked that "this gnatcatcher was apparently
established on summer territories in the oaks and walnuts of the wash
of Boquillas Canyon at the foot of the mountains" of the Sierra del
Carmen. Burleigh and Lowery (1942:200) noted "this species only in the
open woods at the summit of Diamante Pass, where, however, it was not
uncommon." Miller, Friedmann, Griscom, and Moore (1957:201) recorded
_P. c. amoenissima_ breeding at El Diamante on July 8.

*_Polioptila melanura melanura_ Lawrence.--_Specimen examined:_ one,
[Male] 31081, from 7 mi. S, 2 mi. E Boquillas, 800 ft., March 1, 1952,
weight, 5.6 gms.

In Coahuila this subspecies of the Black-tailed Gnatcatcher has been
recorded from several localities. Burleigh and Lowery (1942:200) found
that it "was limited in its distribution to the lower altitudes and was
noted only in the open desert country west of Saltillo." Sutton and
Burleigh (1939a:38) noted it "several times near San Pedro" where on
January 29 one female was taken. Miller, Friedmann, Griscom, and Moore
(1957:205) recorded _P. m. melanura_ at Hipolito on June 30 to July 2
in breeding condition.

_Regulus satrapa satrapa_ Lichtenstein.--Miller (1955a:171) found a
small wintering flock of Golden-crowned Kinglets in the Sierra del
Carmen; this is the only record of the species in Coahuila.

_Regulus calendula calendula_ (Linnaeus).--_Specimens examined:_ total
5: [Female] 31085 from the Rio Grande (=17 mi. S Dryden, Terrell Co.,
Texas, in Coahuila), 600 ft., March 19, 1952, weight, 6.3 gms.; [Male]
[Male] 31082-31083 from 1 mi. N Boquillas, 700 ft., March 8, 1952,
weight, 7.2, 6.5 gms.; [Male] 31084 from Sierra de la Encantada (=38
mi. S, 23 mi. E Boquillas), 4400 ft., March 15, 1954, weight, 5.4 gms.;
and [Male] 31661 from the north slope of Sierra Guadalupe (=11 mi