■±50 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



(Nitoya, Cuf^taRiua). — Nutting and Ridgway, Proc. U. S. Nat. ilus., \ , 1882, 

 391 (La Palma, Gulf of Xicoya).— Zeledo.v, Cat. Aves de Costa Eica, 1882, 9; 

 An. Mus. Nai'. Costa Eica, i, 1887, 112.— S.vlvin and Godmax, Biol. Centr.- 

 Am., Aves, i, 1886, 412, part (Gulf of Mcoya).— .Sharpe, Cat. Birds Brit. 

 Mus., xii, 1888, 761, part (Bebedero). 

 [Embernar/ra} svpercilio-in Sclatsr and Salvin, 5om. Av. Neotr., 1873, 33. 



ARREMONOPS SUPERCILIOSUS SUMICHRASTI (Sharpe). 

 ACAPULCO SPARROW. 



Similar to .1. .s. m^jwrciliosus, Ijut lateral crown-stripes and postocular 

 streak lighter chestnut, sides of head and throat less buff}', and bill 

 more slender. 



Adult w/^A.^— Length (skins), 132.08-142.34 (137.16); wing, 61.21- 

 68..5S (65.79); tail, 51. 31-.59.69 (56.39); exposed culmen, 12.70-13.21 

 (12.95); depth of bill at base, 7.37-7.87 (7.62); tarsus, 22.61-23.11 

 (22.,s(;); middle toe, 11.18-15.49 (14.73).^ 



Adult female.— hBngih. (skins), 129.54-133.35 (131.32); wing, 62.23- 

 (13.50(62.74): tail, 52.07-57.15 (54.61); exposed culmen, 12.70; depth 

 of bill at base, 7.37; tarsus, 22.35-22.86 (22.61); middle toe, 13.97- 

 15.49 (14.73).' 



Coast district of southwestern ]\Iexico in the States of Colima 

 (Manzanillo), Guerrero (Acapulco), and Oaxaca (Huamelula and Puerto 

 Angel). 



Embernagra rufivirgata (not of Lawrence, 1851) Lawrence, Bull. U. S. Nat. Mus., 



no. 4, 1876, 22 (Huamelula, Oaxaca). 

 [Embernagra rujivirgfda'] fi. cras.s)Vo.sJns Eidgway, Proc. U. S. Nat. Mus., i, 1878, 



249, part (Venando I., w. Mexico). 

 Embernagra siipercilioxit (not of Salvin, 1864) Salvin and Godman, Biol. Centr.- 



Am., Aves, i, 1886,412, part (Huamelula, Oaxaca). — Shakpe, Cat. Birds Brit. 



Mus., xii, 1888, 761, part (Huamelula). 

 E.[mbernagra'] xunticlirastl Sharpe, Cat. Birds Brit. Mus., xii, 1888, 762, in text 



("Huamela," i. e., Huamelula, Oaxaca; Brit. Mus.). 

 Arremonops rufivirgatus sumichrasti Nelson, Auk, x\', Apr., 1898, 157 (Pacific 



coast, n. w. Chiapas to Colima). 

 Arremonops superciliosa sumiclinisti Nelson, Proc. Biol. Soc. Wash., xiii, May 29, 



1899, 29, in text. 



ARREMONOPS SUPERCILIOSUS SINALOiE Nelson. 

 MAZATLAN SPARROW. 



Similar to A. s. sumichrasti, but back much tinged with gray and 

 the median crown-stripe, superciliarj' stripe, auricular region, and sides 

 of neck decidedly grayer. 



Adult male.— Length (skins), 132.08-139.70 (135.38); wing, 62.99- 

 64.01 (63.75); tail, 54.10-56.39 (55.37); exposed culmen, 12.95-13.97 

 (13.46); depth of bill at base, 8.64-9.65 (9.40); tarsus, 20.32-23.11 

 (22.10); middle toe, 14.73-14.99 (14.86).' 



Five specimens. ' Three specimens. 



Two specimens. 



