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._) remarked that his individual may best be considered an intergrade between _mexicanus_ and _excubitorides_, being "somewhat closer to the former." Burleigh and Lowery (1942:201) obtained a male _L. l. mexicanus_ "in the open valley just below the summit of Diamante Pass on April 23" that was typical of this subspecies. Burleigh and Lowery (1942:201-202) suggested that _L. l. mexicanus_ breeds in southeastern Coahuila. Sutton and Burleigh (1939a:39) took a typical representative _L. l. mexicanus_ at Mayran on January 30. _Lanius ludovicianus gambeli_ Ridgway.--Miller, Friedmann, Griscom, and Moore (1957:214) recorded this subspecies from Hipolito on November 6. *_Vireo atricapilla_ Woodhouse.--_Specimens examined:_ total 4: sex ? 32099-32100 from Sierra del Pino (=6 mi. N, 6 mi. W Acebuches), 5250 ft., July 3, 1952; and [Male] [Male] 31493-31494 from 16 mi. E, 18 mi. N Ocampo, May 8 and 9, 1954, enlarged testes. The Black-capped Vireo seems to breed as far south as central Coahuila. Miller (1955a:171-172) reported this vireo as a summer resident in "the low catclaw-dominated scrub in the lower washes of Boquillas Canyon and its side valleys, at 4600 to 4800 feet" in the Sierra del Carmen. Dickerman found the Black-capped Vireo common on the dry scrub and oak hillside habitat 16 mi. E and 18 mi. N Ocampo. _Vireo griseus noveboracensis_ (Gmelin).--Ridgway (1904:184) recorded this subspecies of the White-eyed Vireo "west to Sabinas." Miller, Friedmann, Griscom, and Moore (1957:220) also recorded _V. g. noveboracensis_ from Sabinas on May 25. I suspect that the specimen of _V. g. noveboracensis_ from Sabinas that was taken on May 25 was a vagrant. _V. g. noveboracensis_ may occur in Coahuila as a migrant or winter visitant; however, I do not believe that representatives of _noveboracensis_ normally are resident in Coahuila. *_Vireo griseus micrus_ Nelson.--_Specimen examined:_ one, [Male] 32101, from 2 mi. W Jimenez, 850 ft., June 20, 1952, measurements: wing, 58 mm.; tail, 43.5 mm.; culmen, 10 mm.; tarsus, 19 mm. This subspecies of the White-eyed Vireo breeds in Coahuila. Miller, Friedmann, Griscom, and Moore (1957:221) recorded _V. g. micrus_ from Sabinas on March 9 and May 14. The enlarged testes (5x3 mm.) of No. 32101 and the date (June 20) on which it was obtained suggest breeding in Coahuila.