for example in the state of Nuevo Leon on
the Mesa del Chipinque 6 miles south of Monterrey (Sutton and Burleigh,
1939b:174).

Nos. 31645 and 32041 differ from _semplei_ in that the tops of their
heads do not appear to be solid blackish brown at a distance of four to
five feet and in that the dark streakings of their backs and scapulars
are not so heavy as in _semplei_. The mentioned specimens are brownish,
not more black and white throughout as in _suttoni_ nor are their toes
heavily feathered (see Moore, 1941:154).

Findley observed a Screech Owl 2 mi. S and 3 mi. E San Juan de Sabinas
on June 22, 1952. La Gacha would seem to represent the western extent
of _mccallii_ in Coahuila. _O. a. mccallii_ and _suttoni_ probably
intergrade along the eastern slope of the Sierra del Carmen. Tordoff
took No. 32041 near a tree that contained three young Screech Owls.

*_Otus flammeolus flammeolus_ (Kaup).--_Specimens examined:_ total 2:
[Male] 31600 from 20 mi. S Ocampo, 6000 ft., April 4, 1954; and [Male]
31581 from 13 mi. E San Antonio de las Alazanas, 9345 ft., April 9,
1954.

Miller (1955a:163) collected seven Flammulated Owls in the pines and
oaks at 7000 feet in Carboneras Canyon and said that these owls were
common there. Nos. 31600 and 31581 are suffused with cinnamoneous
pigmentation, but represent the grayish phase, as described by Ridgway
(1914:729). Van Hoose (1955:302) previously recorded Nos. 31600 and
31581 from Coahuila.

*_Bubo virginianus pallescens_ Stone.--_Specimens examined:_ total 2:
[Female] 32042 from 2 mi. S, 12 mi. E Nava, June 15, 1952;
measurements: wing, 367 mm.; tail, 233 mm.; culmen, 29 mm.; and [Male]
31677 from 1.5 mi. NE Las Margaritas, 3100 ft., May 31, 1954;
measurements: wing, 345 mm.; tail, 213 mm.; culmen, 26 mm.; testes, 8
mm. long.

Miller (1955a:164) took a male Great Horned Owl in the Sierra del
Carmen on April 22. Ridgway (1914:742) listed _B. v. pallescens_ from
Sabinas. Sutton and Burleigh (1939a:30) obtained a female "near San
Pedro" on January 29. Friedmann, Griscom, and Moore (1950:143) recorded
_B. v. pallescens_ from Coahuila on February 24, May 26, and June 10.
The record of _B. v. mayensis_ from Las Delicias (Amadon and Phillips,
1947:578) has been reidentified by Webster and Orr (1958:141) as _B. v.
pallescens_. Dickerman saw a Great Horned Owl in the Sierra del Pino on
May 12,1954.

*_Glaucidium gnoma californicum_ Sclater.--_Specimen examined:_ one,
[Male] 31582,