BIRDS OF NORTH AND MIDDLE AMERICA. 461 



Middle and southern portions of Mexican plateau, in States of 

 Puebla (Teziutlan; Huanchinang-o), Vera Cruz (Orizalia; Jico), Mexico 

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

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

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

 cuaro), and Morelos (Tetela del Volcan). 



J tkrpetes pileatus ^yAGl.I:B., Isig, 1831, 526 (Mexico). — Sclatek, Pruc. Zool. Soc. 

 Lond., 1858,30-1 (La Parada, Oaxaca); 1859, 380 (Oaxaca); Cat. Am. Birds, 

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

 zaba, Vera Cruz, alpine reg., 6,500-11,500 ft.). — Salvix and Godmax, Biol. 

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

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



A.[tlapetes'] pileahts 'Bo'SAPARTE, Consji. Av., i, 1850, 486.— Cabaxis, Mus. Hein., 

 i, 1851, 140, footnote. 



\^Atlape(es'] pileatus Sclater and Salvix, Nom. A v. Xeotr., 1873, 33. 



[Embervagra] jyilenta 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. 



Adult male— Wing, 62.48-67.31 {65.2S): tail, 6'2. 74-66.04 (64.26); 

 exposed culmen, 1(>. 67-11. 94 (11. IS): 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.()0).i 



Adult fe7nalt.—\Ymg, 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 toe, 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. ilay 13), 1898, 228 

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



ATLAPETES GUTTURALIS ( Lafresnaye). 

 YELLOW-THROATED SPARROW. 



Adults {se.ces 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 w^hite medially, shading 

 into grayish lateral!}^, the flanks and under tail-coverts olivaceous: 

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



^ Five specimens. ^ Three specimens. 



