Miller (1955a:163) reported _Z. m. marginella_ as occurring commonly in the desert border and lower canyons at the base of the mountains of the Sierra del Carmen, "but it occasionally ranged up to 6000 feet in openings in the pine-oak belt." Burleigh and Lowery (1942:189) remarked that this dove was fairly plentiful in the open desert country "about Saltillo, and was ... noted in small numbers in Diamante Valley on April 17 and 19;" they also said that the Mourning Dove was not seen above an elevation of about 7500 feet. Sutton and Burleigh (1939a:29) observed Mourning Doves along the highway across southern Coahuila. Mourning Doves were seen by Findley 2 mi. W Jimenez, 850 feet, on June 19, 1952, and 2 mi. S and 11 mi. E Nava, 810 feet, on June 15, 1952. Dickerman saw one in the Sierra del Pino on May 12, 1954. Findley saw more than one 2 mi. S and 3 mi. E San Juan de Sabinas on June 22, 1952, as did Dickerman at San Marcos (=20 mi. S Cuatro Cienegas) on May 4, 1954. **_Columbigallina passerina_ (Linnaeus).--The Ground Dove seems to be uncommon in Coahuila. Van Tyne and Sutton (1937:34) saw a single Ground Dove fly across the Rio Grande into Coahuila at Lajitas, Texas, on May 10. Findley saw one 2 mi. S and 3 mi. E San Juan de Sabinas on June 22, 1952. **_Scardafella inca_ (Lesson).--The Inca Dove has been recorded from two localities in Coahuila. Hellmayr and Conover (1942:510) listed it from Sabinas. Burleigh and Lowery (1942:189) collected a male and female on April 16 and 19, respectively, "outside the city limits of Saltillo." _Leptotila verreauxi angelica_ Bangs and Penard.--_Specimens examined:_ total 2: [Male] [Male] 31026-31027 (skeletons only) from 4 mi. W Hacienda La Mariposa, 2300 ft., March 25, 1952. The White-fronted Dove seems to be uncommon in Coahuila. Hellmayr and Conover (1942:570) listed _L. v. angelica_ from Sabinas. **_Rhynchopsitta pachyrhyncha terrisi_ Moore.--_Specimens examined:_ total 4: [Male] [Male] 31531-31532 from 13 mi. E San Antonio de las Alazanas, 9345 ft., April 10, 1954, weights, 391.5 and 467.5 gms.; [Female] 31533 from 13 mi. E San Antonio de las Alazanas, 10,000 ft., April 10, 1954, weight, 466 gms.; and sex ? 31534 from Mesa de las Tablas, June, 1951. The Thick-billed Parrot occurs in the southeastern section of the State, where it is fairly common. Moore (1947:27-28) described this parrot as _Rhynchopsitta terrisi_: he thought it differed decidedly from _Rhynchopsitta pachyrhyncha_. However, Hardy and Dickerman (1955:305-306) decided that uniting the two forms as a single species better expresses their relationship. Burleigh and Lowery (1942:189) reported seeing a small flock of Thick-billed Parrots on the summit of Diamante Pass. Dickerman, in his field notes, wrote that at a place 13 mi. E San Antonio de las Alazanas, 9345 feet, a large flock of about 300 birds was in a spruce-fir-pine-aspen association.