BIRDS OP NORTH AND MIDDLE AMERICA 49 



(1899), 219 (Limoncito, Sinaloa). — Salvin and Godman, Biol. Centr.-Amcr., 

 Aves, iii, 1903, 279, pi. 12 (Mazatlan and Presidio de Mazatlan, Sinaloa; San 

 Bias and Santiago, Tepic). — Miller, Bull Amer. Mus. Nat. Hist., xxi, 1905, 343 

 (Escuinapa, etc., s. Sinaloa; habits); xxii, 1906, 163 (Sayapa, Durango, 2,500 

 feet). — McLellan, Proc. California Acad. Sci., ser. 4, xvi, 1927, 6 (Labrados, 

 Sinaloa). — -Peters, Check-list Birds of World, ii, 1934, 18, part (Sinaloa to 

 Jalisco). — Bailey and Conover, Auk, Iii, 1935, 424, in text (Durango, Mexico). — 

 VAN RossEM, Condor, xHv, 1942, 11 in text (tax.; fig. of head). 



0\rtaUs\ zmgleri Ridgway, Man. North Amer. Birds, 1887, 208. — Mendizabal, Rev. 

 Soc. Mex. Hist. Nat., i, No. 3, 1940, 180, in text (Mexico). 



[Or talis] wagleri Sharpe, Hand-list, i, 1899, 17. 



Ortalis wagleri zvagleri Hellmayr and Conover, Cat. Birds Amer., i, No. 1, 1942, 

 168 (syn. ; distr.). 



Ortalis vetula maccalli (not Ortalida mccalli Baird) Bailey, Auk, xxiii, 1906, 385 

 (San Bias, Tepic). 



ORTALIS WAGLERI GRISEICEPS van Rossem 



Northern Rufous-bellied Chachal.\ca 



Adult (sexes alike). — Similar to that of Ortalis wagleri zvagleri but 

 with the head and upper hindneck paler — ashy neutral gray to pale slate 

 gray and with less brownish wash; upperparts slightly grayer, especially 

 in worn plumage ; breast and lower throat more grayish, less greenish — 

 ashy deep grayish olive ; abdomen, sides, flanks, thighs, and under tail 

 coverts averaging slightly paler than in the nominate race, averaging 

 more hazel than russet. 



Juvenal. — None seen. 



Dozvny young. — None seen. 



Adult male. — Wing 256-272 ; tail 277-279 ; exposed culmen 26-27 ; 

 tarsus 67, 67 ; middle toe without claw 54-60 mm.^''^ 



Adult female.— Wmg 248-258 (253) ; tail 265-288 (275) ; exposed 

 culmen 24-26 (24.8) ; tarsus 67-70 (68.5) ; middle toe without claw 

 52-58 (56 mm.). 5^ 



Range. — Resident from southern Chihuahua (Hacienda de San 

 Rafael) and southern Sonora (Alamos) south into northern Sinaloa 

 for an undetermined distance. 



Type locality. — Alamos, Sonora, Mexico. 



Ortalida zvagleri (not of Gray, 1867) Lawrence, Mem. Boston Soc. Nat. Hist., ii, 



1874, 306 rart (Sonora).— Peters, Check-list Birds of World, ii, 1934, 18 



part (Chihuahua and Sonora). 

 Ortalis zvagleri (not of Gray, 1867) v.^N Rossem, Trans. San Diego Soc. Nat. 



Hist., vi, No. 19, 1931, 244 (Sonora, Mexico). — Peters, Check-list Birds of 



World, ii, 1934, 18, part. 

 Ortalis zvagleri griseiceps van Rossem, Bull. Mus. Comp. Zoo!., Ixxvii, 1934, 431 



(Alamos, Sonora, Mexico; crit.). — Hellmayr and Conover, Cat. Birds Amer., 



i, No. 1, 1942, 167 (syn.; distr.). 



" Two specimens from Sonora. 



^ Four specimens from Sonora and Chihuahua. 



