The Black and White Warbler is an uncommon visitant or migrant in Coahuila. Miller (1955a:172) remarked that Marsh took a fall migrant on September 1 in Chuperosa Canyon in the Sierra del Carmen. Burleigh and Lowery (1942:202) secured a female Black and White Warbler "in an orchard on the outskirts of Saltillo" on April 20 and a male "near the top of Diamante Pass on April 23." _Vermivora celata celata_ (Say).--_Specimens examined:_ total 2: sex ? 31091 from the Rio Grande (=17 mi. S Dryden, Terrell Co., Texas, in Coahuila), 600 ft., March 19, 1952, measurements: wing, 57 mm.; tail, 47 mm.; weight, 7.7 gms.; and [Male] 31092 from 4 mi. W Hacienda La Mariposa, 2300 ft., March 25, 1952, measurements: wing, 62 mm.; tail, 48 mm.; weight, 9.2 gms. This subspecies of the Orange-crowned Warbler is an uncommon migrant in Coahuila. In Brewster County, Texas, Van Tyne and Sutton (1937:83) found _V. c. celata_ "not common as a spring transient." Miller, Friedmann, Griscom, and Moore (1957:239) recorded _V. c. celata_ from Coahuila. The quality of the pale yellow color and the sizes of Nos. 31091-31092 suggest that they are representatives of _V. c. celata_. _Vermivora celata orestera_ Oberholser.--Burleigh and Lowery (1942:202) found _V. c. orestera_ "only on infrequent occasions ... in the open woods surrounding the summit of Diamante Pass" where they obtained one specimen. _Vermivora virginiae_ (Baird).--Miller (1955a:172) took a male Virginia's Warbler in Boquillas Canyon in the Sierra del Carmen "in scattered scrubby oak growth with grass and cactus beneath." This species in the Sierra del Carmen is considered "casual" by Miller, Friedmann, Griscom, and Moore (1957:241). **_Vermivora crissalis_ (Salvin and Godman).--_Specimen examined:_ one, [Male] 31590, from 20 mi. S Ocampo, 7000 ft., April 5, 1954, weight, 10 gms. The Colima Warbler is common locally in Coahuila. Burleigh and Lowery (1942:203) found this species fairly common on the steep, rugged slopes above the summit of Diamante Pass and saw none below an elevation of approximately 7500 feet. Bangs (1925:251) stated that Nelson and Goldman secured a specimen of the Colima Warbler at Sierra Guadalupe on April 25. *_Vermivora superciliosa mexicana_ (Bonaparte).--_Specimen examined:_ one, [Male] 31591, from 13 mi. E San Antonio de las Alazanas, 9350 ft., April 10, 1954. Hartlaub's Warbler is uncommon in Coahuila and seems to occur only in the southeastern section of the State; No. 31591 is the first record of the species in Coahuila. The size of the testes (5x2 mm.) of No. 31591 and the fact that the bird was singing when first seen suggest the possibility that _V. s. mexicana_ breeds in southeastern Coahuila. Breeding there is not unexpected because the species has been found breeding in Nuevo Leon (Miller, Friedmann, Griscom, and Moore, 1957:242).