intergrade in
northern Coahuila.

Burleigh and Lowery (1942:195) found _mexicanus_ to be "quite plentiful
on the plains surrounding Saltillo." Sutton and Burleigh (1939a:33)
noted the Vermilion Flycatcher "near San Pedro." Cory and Hellmayr
(1927:92) listed _P. r. mexicanus_ from Sabinas. The size of the testes
(6x4 mm. long) of No. 32060 and the dates (June 19 and 20) on which our
specimens were collected indicate breeding.

_Pyrocephalus rubinus flammeus_ van Rossem.--This subspecies of
Vermilion Flycatcher occupies the northwestern section of Coahuila.
Marsh and Stevenson (1938:287) took a specimen of _P. r. flammeus_
"near Santo Domingo, east of the Del Carmens...." Miller (1955a:167)
re-examined this specimen and stated that "its affinity with the
northwest race of the species seems correct in terms of the characters
outlined by van Rossem (1934:353)."

_Eremophila alpestris enthymia_ (Oberholser).--Miller, Friedmann,
Griscom, and Moore (1957:105) recorded this subspecies of Horned Lark
wintering 4 mi. S Hipolito (November 2 to February 24). They reported
also that _E. a. enthymia_ breeds in Coahuila (4 mi. S Hipolito ?).

*_Eremophila alpestris diaphora_ (Oberholser).--_Specimens examined:_
total 9: [Male] [Male] 32073-32078 and [Female] 32079 from 7 mi. S, 4
mi. E Bella Union, 7200 ft., June 25, 1952; and [Male] [Male]
31605-31606 from 14 mi. W San Antonio de las Alazanas, 6500 ft.,
January 9, 1954.

Burleigh and Lowery (1942:195) wrote that this subspecies of Horned
Lark was uncommon "about Saltillo," but "fairly common" in Diamante
Valley, at about 7000 feet. Oberholser (1902:863) recorded the
subspecies _aphrasta_ from La Ventura. Ridgway (1907:326) listed
_Otocoris alpestris aphrasta_ Oberholser from Saltillo and La Ventura.
However, Miller, Friedmann, Griscom, and Moore (1957:105) indicated
that _E. a. diaphora_ rather than _aphrasta_ was recorded from Saltillo
and La Ventura. Sutton and Burleigh (1939a:35) remarked that "specimens
collected near Ramos Arizpe [in southeastern Coahuila]" proved to be
_E. a. aphrasta_. However, this record might be questioned, as Miller,
Friedmann, Griscom, and Moore (_op. cit._) indicated, because
_diaphora_, rather than _aphrasta_, seems to occupy the southeastern
sector of Coahuila. Possibly typical representatives of _aphrasta_
and/or intergrades between _aphrasta_ and _diaphora_ are present in
western Coahuila; however, no records of _E. a. aphrasta_ exist from
we