BIRDS OF NOETH AND MIDDLE AMERICA. 515 



Baird, Brewer, and Ridgway, Hist. N. Am. Birds, ii, 1874, 356, part, pi. 44, 

 fig. 2.— Lawrence, Mem. Bost. Soc. N. H., ii, 1874, 287 (Mazatlan; Topic; 

 Plains of Colima); Bull. U. S. Nat. Mus., no. 4, 1876, 27 (Gineta Mts., 

 Chiapas).— Ferrari-Perez, Proc. U. S. Nat. Mus., ix, 1886, 155 (Chietla, 

 Puebla; Actopam and Jalapa, Vera Cruz). — American Ornithologists' 

 Union, Check List, 1886, no. 460, part. — Chapman, Bull. Am. Mus. N. H., x, 

 1898, 31 (Jalapa), 43 (Las Vigas, Vera Cruz, 8,000 ft.; habits; notes). 



[Contopus] pertinm: Sclater and Salvin, Noni. Av. Neotr., 1873, 52, part. 



[Contopiis pertinax] var. pertinax Baird, Brewer, and Ridgway, Hist. N. Am. 

 Birds, ii, 1874, 351, part. 



[Pyrocephalus] pei-finax Gray, Hand-list, i, 1869, 362, no. 5509. 



Horizopus pertinax Oberholser, Auk, xvi, Oct., 1899, 331. 



[Horizopiis] pertincuc Sharpe, Hand-list, iii, 1901, 141. 



MYIOCHANES PERTINAX PALLIDIVENTRIS (Chapman). 

 COUESS FLYCATCHER. 



Similar to H. p. pertinax, but coloration decidedly grayer above and 

 paler beneath, the back, etc., deep smoke gray, the chest lighter 

 smoke gray, the abdomen, etc., dull white, yellowish white, or very 

 pale buffy yellow. 



Young. — Essentially like adults but slightly darker and more oli- 

 vaceous above, the upper tail-coverts tipped (more or less broadly) 

 with light cinnamon or buffy, the middle and greater wing-coverts 

 broadly tipped with the same, forming two distinct bands across 

 wing; under parts suffused with pale buffy. 



Adult waZ^.— Length (skins), 174-189 (183); wing, 101-111 (107.2); 

 tail, 83.5-90 (83.9); exposed culmen, 17-20 (18.6); tarsus, 16.5-17 

 (16.8); middle toe, 10-11 (10.6). « 



Adult female.— L&ngth. (skins), 166-196 (174); wing, 97.5-108.5 

 (100.5); tail, 76.5-90.5 (80.1); exposed culmen, 16-20 (17.9); tarsus, 

 15.5-17 (16.4); middle toe, 10-10.5 (10.2).^ 



Northwestern Mexico, in States of Durango (El Salto'^^), Chihuahua 

 (Rio Verde; Yecera; Tutuaca; Casas Grandes; Jesus Maria; Pinos 

 Altos; Colonia Garcia) and Sonora (Alamos; San Jose Mountains) 

 and Territory of Tepic (Santa Teresa'^), and mountains of southern 

 and central Arizona (Santa Rita Mountains; Huachuca IMountains; 

 White Mountains; Santa Catalina Mountains; Mogollon Mountains; 

 Mount Graham; Fort Whipple; near Camp Apache; Bowie Agency, 

 etc.); accidental in Colorado (Fort Lyon, one specimen). 



Contopus pertinax (not of Cabanis and Heine) Coues, Proc. Ac. Nat. Sci. Phila., 

 1866, 60 (Fort Whipple, Arizona); Check List, 1873, no. 254; 2d ed., 1882, no. 

 381; Birds Northwest, 1874, 259.— Elliot, Hlustr. N. Am. Birds, i, 1869, 

 pi. 8. — Cooper, Orn. Calif., 1870, 324, part (Arizona). — Baird, Brewer, and 

 Ridgway, Hist. N. Am. Birds, ii, 1874, 356, part. — Henshaw, Zool. Exp. 

 W. leoth Merid., 1875, 351 (White Mts., Rock Canon, near Camp Apache, 



a Nine specimens. 

 b Eight specimens. 

 " Specimens from these localities incline toward M. p. pertinax. 



