In Coahuila the Killdeer seems to be uncommon. Van Tyne and Sutton (1937:28) remarked that it nested in Brewster County, Texas. The species probably nests in northern Coahuila as well; the lengths of the testes (left, 9 mm.; right, 4 mm.) of No. 31023 support this view. _Eupoda montana_ (Townsend).--Pitelka (1948:118) recorded one female Mountain Plover from Hipolito on February 23. Van Tyne and Sutton (1937:28) reported that the Mountain Plover nested in Brewster County, Texas. Possibly _Eupoda montana_ nests in northern Coahuila as well. _Numenius americanus parvus_ Bishop.--_Specimens examined:_ total 3: [Male] 31434 and [Female] 35406 (skeleton only) from 8 mi. E, 2 mi. S Americanos, May 19, 1954, measurements: wing, 250, 258 mm.; tail, 96, 100 mm.; tarsus, 74, 81.5 mm.; culmen, 11.2, 16.5 mm.; [Male] gonad, 6x2 mm.; and [Female] 35400 (skeleton only) from 7 mi. W San Antonio de las Alazanas, January 11, 1954. The Long-billed Curlew is not common in Coahuila. Dickerman obtained both the specimens from 8 mi. E and 2 mi. S Americanos out of a flock of 35. Sutton and Burleigh (1939a:28) noted the Long-billed Curlew "near San Pedro ... [on] January 29." _Actitis macularia_ (Linnaeus).--The Spotted Sandpiper has been obtained from two localities in Coahuila. Miller (1955a:162) stated that an immature in fall migration was taken "at the tank in the western hills" of the Sierra del Carmen on September 4. Burleigh and Lowery (1942:189) found the Spotted Sandpiper "at the Chorro del Agua near Arteaga" on April 17 and 19. _Totanus melanoleucus_ (Gmelin).--_Specimen examined:_ one, [Female] 31024, from the Rio Grande (=17 mi. S Dryden, Terrell Co., Texas, in Coahuila), 600 ft., March 18, 1952, weight, 224 gms. The Greater Yellowlegs is an uncommon spring and probably fall migrant in Coahuila. No. 31024 is the first record of this species in Coahuila. _Totanus flavipes_ (Gmelin).--Miller (1955a:162) reported that Marsh took a Lesser Yellowlegs "at the tank in the western hills" of the Sierra del Carmen on September 4. _Erolia melanotos_ (Vieillot).--Miller (1955a:162) reported taking a Pectoral Sandpiper on September 4 "at the tank in the western hills" of the Sierra del Carmen. [_Erolia minutilla_ (Vieillot).--Friedmann, Griscom, and Moore (1950:99) listed the Least Sandpiper from Coahuila.] *_Recurvirostra americana_ Gmelin.--_Specimens examined:_ total 2: [Male] 31433 and [Female] 31432 from 8 mi. E, 2 mi. S Americanos, May 19, 1954. Van Hoose (1955:302) reported a small breeding colony of American Avocets 8 mi. E and 2 mi. S Americanos "on a large grassy playa traversed by rows of creosote (_Larrea tridentata_)." No. 31432 was taken from a nest containing four partly-incubated eggs. Van Hoose (_loc. cit._) also reported that four eggs in a second nest contained well-developed, downy young.