15 and 17 Burleigh and Lowery (1942:201) saw scattered pairs of
the Phainopepla "only in the open woods surrounding Diamante Pass."
Miller (1955a:171) noted _P. n. nitens_ "on April 20 and 28 in large
clumps of mesquite near Piedra Blanca, at about 4500 feet, on the
foothills" of the Sierra del Carmen. Dickerman saw a Phainopepla 20 mi.
S Ocampo on April 4, 1954. Baird (1858:320) listed a male _P. n.
nitens_ from Coahuila, Mexico. Hellmayr (1935:107) remarked that
_Phainopepla nitens_ was listed from Coahuila by "Salvin and Godman,
Biol. Centr.--Amer., Aves, 1, p. 220, 1883...." Miller, Friedmann,
Griscom, and Moore (1957:213) stated that _P. n. nitens_ breeds at El
Diamante. The long wing (100 mm.) and long tail (96 mm.) of No. 31674
is typical for _P. n. nitens_.

_Phainopepla nitens lepida_ Van Tyne.--Sutton and Burleigh (1939a:39)
recorded _P. n. lepida_ from Diamante Pass on March 6; Miller,
Friedmann, Griscom, and Moore (1957:213) suggest that this individual
was a vagrant.

_Lanius ludovicianus migrans_ Palmer.--Burleigh and Lowery (1942:202)
obtained this subspecies of Loggerhead Shrike "on the outskirts of
Saltillo on April 20." The specimen shows evidence of intergradation
with _excubitorides_.

**_Lanius ludovicianus excubitorides_ Swainson.--Miller, Friedmann,
Griscom, and Moore (1957:216) recorded _L. l. excubitorides_ from
Sabinas and from Hipolito (November 2 to February 24).

*_Lanius ludovicianus mexicanas_ Brehm.--_Specimens examined:_ total 4:
sex ? 31089 from 7 mi. S, 2 mi. E Boquillas, 800 ft., February 29,
1952, weight, 45.1 gms.; [Female] 31090 from 36 mi. S, 15 mi. E
Boquillas, 2550 ft., March 12, 1952; sex ? 30233 from 1 mi. N San
Lorenzo, 4200 ft., February 5, 1951; and [Female] 32098 from 7 mi. S, 4
mi. E Bella Union, 7200 ft., June 25, 1952.

Miller (1931:66) suggested that _L. l. mexicanus_ and _L. l.
excubitorides_ intergrade in Coahuila; all of the specimens of
Loggerhead Shrike from Coahuila that I have examined are intergrades
between _mexicanus_ and _excubitorides_. Our four specimens have a
superciliary line that is indistinct and the black mask of each extends
somewhat posterior to the auricular region. The anterior part of their
forehead is somewhat lighter than the remaining part of their head and
back.

Miller (1955a:171) detected _L. l. mexicanus_ only once in catclaw
scrub in the lower part of Boquillas wash at about 4600 feet in the
Sierra del Carmen. He (_loc. cit._) re