280 CEACID^. 



Ortalia poliocephala, Ferrari-Perez, Pr. U. S. Nat. Mus. ix, p. 175 'j Grant, Cat. Birds Brit. Mus. 



xxii. p. 5ir ; Handb. Game-Birds, ii. p. 244 ". 

 Ortalida leucogastra, Scl. (nee Gould), P. Z. S. 1859, p. 391 ". 

 Sapra grisescenti-olivacea ; pileo et collo undique saturate cinereis ; praepeotore grisescenti-olivaceo ; pectore 



et abdomine albis ; subcandalibus pallide ferrugineis ; rectricibus fnlvo terminatis : rostro plumbeo ; 



pedibus cineraceis ; iride coryllina, orbite et gula nudis coccineis. Long, tota circa 25-0, alae 9-6, 



caudffi 10-8, tarsi 2-9. 

 5 ad. mari simiKs. (Descr. maris et feminae ex Tehuantepec. Mus. nostr.) 



Eab. Mexico ^ ^ {le Strange ^), Real Arriba {Deppe *), Rio Armeria and Rio Tupila 

 (Xantus 4 ^), Chachapa, Puebla {Ferrari-Perez ^), Rio Grande, Oaxaca (Boucard "), 

 Tapana, near Santa Efigenia, Barrio, Tehuantepec city, Torullo, Tapanatepec, 

 Tonala [Sumichrast ^ ''), Salina Cruz {Richardson ^). 



0. poliocephala belongs to the section of the genus including the species with white 

 or buff tips to the tail-feathers, and is further distinguished by the rufous-buff under 

 tail-coverts. Although nearly allied to 0. vetula, it is easily recognized from that 

 species by its larger size and dark grey head and neck. 



The present species is said by Sumichrast ^ to be very common in the Pacific coast 

 provinces of Mexico, where it is known as the " Chachalaca." Nothing has been 

 published respecting its habits. 



3. Ortalis vetula. 



Penelope vetula, Wagl. Isis, 1830, p. 1112 '. 



Ortalida vetula, Wagl. Isis, 1832, p. 1227 = ; Moore, P. Z. S. 1859, p. 62 ' ; Scl. P. Z. S. 1859, 



pp. 369 S 391 ' ; Scl. & Salv. Ibis, 1859, p. 224« ; P. Z. S. 1869, p. 364' ; 1870, pp. 538 ', 



838'; Lawr. Ann. Lye. N. Y. v. p. 116"; Bull. U. S. Nat. Mus. no. 4, p. 45"; 



Taylor, Ibis, 1860, p. 311 "; Snmichr. La Nat. ii. p. 37 " ; v. p. 229". 

 Ortalis vetula, Boucard, P. Z. S. 1883, p. 460"; Salv. Ibis, 1889, p. 378'=; 1890, p. 89"; 



Grant, Cat. Birds Brit. Mus. xxii. p. 512 " ; Handb. Game-Birds, ii. p. 245 ". 

 Penelope garrula, Licht. (nee Humb.), Preis-Verz. Mex. Vog. p. 3"; Cab. J. f. Om. 1863, p. 58". 

 Ortalida poliocephala, Scl. (nee Wagl.), P. Z. S. 1856, p. 310"; Cassin, lUustr. p. 267, t. 44". 

 Ortalida maccalli, Baird, B. N. Amer. p. 611"; Duges, La Nat. i. p. 141" ; Lawr. Ann. Lye. 



N. Y. ix. p. 209 '°. 

 Ortalis vetula maccalli, Ferrari-Perez, Pr. U. S. Nat. Mus. ix. p. 176"; Herrera, La Nat. (2) i. 



p. 278"'; Bendire, Life Hist. N. Amer. Birds, p. 119, t. 3. fig. 16''; Drury, Joum. 



Cincinnati Soc. xviii. p. 201 '°. 

 Ortalida plumMceps, Gray, List Gallinae Brit. Mus. p. 11 ^'. 

 Ortalida ruficrissa, Scl. & Salv. P. Z. S. 1870, p. 538 ". 

 Ortalis vetula pallidiventris, Ridgw. Man. N. Amer. Birds, p. 209"; Chapm. Bull. Amer. Mus. viii. 



p. 288". 



0. poliocephalce similis, sed minor, pileo coUoque minus cinerascentibus ; gula nuda et iride coccineis. Long. 



tota circa 20-0, alae 8-0, caudae 9-6, tarsi 2-5. 

 5 mari simdis, (Descr, maris et feminae ex Vera Cruz. Mus. nostr.) 



