BIRDS OF NORTH AND MIDDLE AMEEIOA. 461 



Middle and southern portions of Mexican plateau, in States of 

 Puebla(Teziutlan; Huanchinango), Vera Cruz (Orizaba; Jico), Mexico 

 (Amecameca; City of Mexico), Oaxaca (La Parada; Cerro San Felipe; 

 Mount Zampoal tepee; Totontepec; Oaxaca, etc.), Guerrero (Chil- 

 pancingo), Jalisco (La Laguna; San Sebastian), Michoacan (Patz- 

 cuaro), and Morelos (Tetela del Volcan). 



Jtlapetes ^iZeates Wagler, Isis, 1831, 526 (Mexico). — Sclatee, Proc. Zool. Soo. 

 Lond., 1858,304 (La Parada, Oaxaca); 1869, 380 (Oaxaca); Cat. Am. Birds, 

 1862, 120 (Oaxaca).— SuMicHKAST, Mem. Bost. Soc. N. H., i, 1869, 551 (Ori- 

 zaba, "Vera Cruz,- alpine reg., 6,500-11,500 ft.).— Salvin and Godman, Biol. 

 Centr.-Am., Aves, i, 1886, 405. — Fekeahi-Pbrez, Proc. U. S. Nat. Mus., ix, 

 1886, 148 (Teziutlan, Puebla).— Shakpe, Cat. Birds Brit. Mus., xii, 1888, 740. 



A. [tlapetes} pileatus Bos afaki:b, Consp. Av., i, 1850, 486. — Cabanis, Mug. Hein., 

 i, 1851, 140, footnote. 



{Atlapetes] pileatus Sclater and Salvin, Nom. Av. Neotr., 1873, 33. 



[Embernagra] pileata Gray, Hand-list, ii, 1870, 92, no. 7348. 



ATLAPETES PILEATUS DILUTUS Ridgway. 

 CHIHUAHUA SPARROW. 



Similar to A. p. pileatus but averaging smaller, with smaller and more 

 slender bill, grayer upper parts, and yellow of under parts paler and 

 duller. 



A3uli male.— Wing, 62.48-67.31 (65.28); tail, 62.74-66.04 (64.26); 

 exposed culmen, 10.67-11.94 (11.18); depth of bill at base, 6.35-7.62 

 (6.86); tarsus, 22.86-24.13(23.37); middle toe, 15.49-16.51 (16.00).' 



Adult female.— Wing, 62.23-64.77 (62.99); tail, 59.69-64.77 (62.99); 

 exposed culmen, 10.16-11.43 (10.92); tarsus, 22.86-23.62 (23.37); mid- 

 dle tpe, 15.75-16.51 (16.00).^ 



Northwestern portion of Mexican plateau, in State of Chihuahua 

 (Bravo, Jesus Maria, etc.). 



Atlapetes pileatus dilutus Ridgway, Auk, xv, July (pub. May 13), 1898, 228 

 (Jesus Maria, Chihuahua; U. S. Nat. Mus.). 



ATLAPETES GUTTURALIS (Lafresnaye). 

 YELLOW-THROATED SPARROW. 



Adults {sexes alike). — Pileum and sides of head uniform black, the 

 former with a median stripe of white from crown to hindneck; rest of 

 upper parts plain dusky olive; malar region, chin, and throat yellow 

 (sometimes orange) ; rest of under parts dull white medially, shading 

 into grayish laterally, the flanks and under tail-coverts olivaceous; 

 bill black; iris brown; legs and feet deep brownish. 



' Five specimens. ^ Three specimens. 



