**_Guiraca caerulea eurhyncha_ Coues.--Amadon and Phillips (1947:580) obtained an adult male of this Blue Grosbeak from Las Delicias on August 12. This subspecies, according to Miller, Friedmann, Griscom, and Moore (1957:334), is resident at middle and lower elevations through most of central and southern México. Except for the occurrence of intergrades of _G. c. interfusa_, _caerulea_, and _eurhyncha_ in southern Nuevo León and Tamaulipas (Miller, Friedmann, Griscom, and Moore, 1957:335), the record from Las Delicias represents the northern limit of the range of the subspecies _eurhyncha_.
*_Passerina cyanea_ (Linnaeus).--_Specimen examined:_ one, [Male] 31544, from San Marcos, May 5, 1954.
The Indigo Bunting is rare in Coahuila. Van Hoose (1955:303) reported that No. 31544 seems to provide the first record of the species in the State. The Indigo Bunting is a summer resident in southwestern Oklahoma and southeastern Texas (Miller, Friedmann, Griscom, and Moore, 1957:336). No. 31544 seemingly represents a large extension in the summer range of the Indigo Bunting. Van Hoose (_loc. cit._) stated that No. 31544 was observed chasing another male, and the pursuer in turn was followed by a female; he thought that the territorial behavior of this bird suggested breeding.
*_Passerina versicolor versicolor_ (Bonaparte).--_Specimens examined:_ total 2: [Male] 35414 from 6 mi. N, 2 mi. W Castillón, 3750 ft., June 30, 1953, weight, 8 gms.; and [Male] 35415 from 5 mi. S Castillón, 4150 ft., June 28, 1953.
Although the Varied Bunting has been recorded only from northwestern Coahuila, I suspect that this bird is locally common throughout most of the State. Miller (1955a:174) stated that the habitat of this species consisted of catclaw-covered bottom lands at the base of the Sierra del Carmen at 4700 feet. Miller's records indicate incipient breeding by _P. v. versicolor_ in the Sierra del Carmen on April 26. The size of the testes (11 mm.) of No. 35415 and the dates (June 28, 30) on which Nos. 35414-35415 were collected are strong evidence of breeding by the Varied Bunting 6 mi. N and 2 mi. W Castillón and 5 mi. S Castillón.
*_Passerina ciris pallidior_ Mearns.--_Specimens examined:_ total 6: [Male] 32141 and [Female] 32142 from 2 mi. S, 11 mi. E Nava, 810 ft., June 15 and 16, 1952; [Male] 35416 from 6 mi. N, 2 mi. W Castillón, 3750 ft., June 29, 1953, weight, 15 gms.; [Male] 32140 from 2 mi. S, 3 mi. E San Juan de Sabinas, June 22, 1952; [Male] 31547 from 16 mi. N, 14 mi. E Ocampo, May 10, 1954, weight, 16 gms.; and [Male] 31546 from San Marcos, May 5, 1954.