34 BULLETIN 50, UNITED STATES NATIONAL MUSEUM 



1924, 12 (Brownsville, Tex.). — Griscom and Crosby, Auk, xlii, 1925, 533 



(Brownsville, Tex.). — Friedmann, Auk, xlii, 1925, 543 (Lower Rio Grande 



Valley, Tex.). 

 0[rtalis] vetula maccalli Coues, Key North Amer. Birds, ed. 2, 1884, 573. — Ridgway, 



Man. North Amer. Birds, 1887, 209. 

 Ortalis vetula mccalli American Ornithologists' Union, Check-list, ed. 3, 1910, 



146. — Pearson, Auk, xxxviii, 1921, 518 (near Brownsville, Tex.; coll. notes; 



habits). — Hellmayr and Conover, Cat. Birds Amer., i. No. 1, 1942, 169 (syn. ; 



distr.). 

 Ortalis mccalli Petrides, Trans. 7th North Amer. Wildlife Conf., 1942, 310, footnote 



(age indicators — plumage; Brownsville, Tex.). 

 [Ortalis] maccalli Sharpe, Hand-list, i, 1899, 17. 

 Penelope poliocephala (not of Wagler) Baird, Rep. Stansbury's Expl. Great Salt 



Lake, 1852, 334 (Matamoros, Tamaulipas; Rio Grande, Tex.). 

 Ortalida poliocephala Cassin, Illustr. Birds California, Texas, etc., 1855, 267, pi. 44 



(Texas). 



ORTALIS VETULA VETULA (Wagler) 



Oax.\ca Chachalaca 



Adult (sexes alike). — Similar to Ortalis vetula mccalli but smaller, the 

 tips of the tail feathers not white, but isabelline buffy, the throat slightly 

 more fulvous, less olive, the upperparts, in worn specimens, more brown- 

 ish, less olive-green than in mccalli. 



Juvenal. — None seen. 



Dozi'ny young. — Similar to the corresponding buffy (not grayish) stage 

 of mccalli, but much more rufescent, the brownish parts replaced by 

 chestnut to buffy chestnut. 



Adult male.— Wing 177-202 (192.8); tail 197-225 (214.3); exposed 

 culmen 24-28 (25.9) ; tarsus 58-65 (62) ; middle toe without claw 42-51 

 (47.5 mm.). 31 



Adult female.— Wing 181-195 (186.6) ; tail 208-227 (215.6) ; exposed 

 culmen 22-25 (23.4) ; tarsus 54-60 (56.6) ; middle toe without claw 

 43-47 (45.2 mm.). 32 



Range. — Resident from southeastern Mexico, excluding Yucatan Penin- 

 sula (central Veracruz — Jalapa, Acayucan, Playa Vicente, Cueste de Alis- 

 antla, Plan del Rio, Vega de Casadero, and La Antigua ; eastern Oaxaca 

 — Chimalapa, Guichicovi, Tolosa, and Tuxtepec; Puebla — Haciende de 

 los Atlixcos and San Jose Acetano ; southern Campeche ; Tabasco — Mon- 

 tecristo; western and southern Chiapas (Tecpatan, Mapastepec) ; to Brit- 

 ish Honduras (Cayo District) and the Caribbean slope, but not the coastal 

 belt itself, of Guatemala (Sepacuita, Secanquim, and Finca Chama). 



Type locality. — Veracruz, Veracruz, Mexico. 



P[enelope] vetula Wagler, Isis, 1830, 1112 (Mexico; coll. Alonaco ]Mus.). 

 Penelope vetula van Rossem, Trans. San Diego Soc. Nat. Hist., vii, 1934, 349 (type 

 spec. ; crit.). 



" Eight specimens from Oaxaca, Tabasco, and southern Veracruz. 

 " Five specimens from Oaxaca and Campeche. 



