I 



246 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



Coast district of southern Sinaloa (Tatemalis)/ 

 Ahnophila rufescens sinaloa Ridgway, Auk, xvi, July, 1899, 254 (Tatemalis, Sina- 

 loa; coll. California Acad. Sci. ) . 



AIMOPHILA MCLEODII- Brewster. 

 McLEOD'S SPARROW. 



In general appearance and size resembling- A. rufeacem pallida, but 

 bill decidedly smaller and relatively more slender, feet smaller, upper 

 parts much grayer, pileum less extensively chestnut, and brown post- 

 ocular streak much narrower. 



Adult ;y.a/.. -Length (skins), 161.29-185.42 (173.23)^' wing, 71.12- 

 78 74 (75.18); tail, 71.12-78.74 (74.93); exposed culmen, 15.24-17.02 

 (15.49); depth of bill at base, 9.65;^ tarsus, 22.35-23.62 (23.11); mid- 

 dle toe, 16.51-17.78 (17.27).^ 



Adult /■^mrtZt^ -Length (skins),161. 29-172. 72 (166.62);^ wmg, 66.04- 

 73.66 (70.36); tail, 69.85-76.96 (72.90); exposed culmen, 13.97-15.24 

 (14.99); depth of bill at base, 8.89-9.91 (9.14);'^ tarsus, 22.61-24.38 

 (23.37); middle toe, 16.00-17.78 (17.27).* 



Northwestern Mexico, in States of Sonora (Oposura; Bavispe River; 

 Puerto de los Pinitos; Alamos, etc.). Chihuahua (El Carmen; Jesus 

 Maria; Mina Abundancia; Hacienda de San Rafael, etc.), and Durango 

 (Chacala). 



AhwmhWa mcleodii Brewster, Auk, v, Jan., 1888, 92 (El Carmen, Chihuahua; 



coll. W. Brewster). -Allen, Bull. Am. Mus. N. H., v, 1893, 39 (Puerto de 



lot* Pinitof-, n. e. Sonora \ 

 Ahnophila caJwoni Brewster, Auk, v, Jan., 1888, 93 (mountains near Oposura, 



Sonora; coll. W. Brewster). 

 Peucxa megarhyncha Salvin and Godman, Ibis, 6th ser., i, Apr., 1889, -38 (Santa ^ 



Ana, Sonora, n. w. Mexico; coll. Salvin and Godman). 

 Peucaa notosticta (not of Sclater and Salvin) Allen, Bull. Am. Mus. N. H., v, 



1893, 39 (Bavispe R. and Guanopa, n. e. Sonora). 



AIMOPHILA RUFICEPS RUFICEPS (Cassin). 

 RTJFOUS-CROWNED SPARROW. 



Adidts {sexes alike).— TWeum clear chestnut, darker on the forehead, 

 where sometimes blackish anteriorly, with a median whitish line at 

 base of culmen, and usually with buffy grayish streaks along the nnd- 

 dle of crown and occiput, forming a slight indication of a media n 



1 Tatemalis is said to be in the foothills, southeast from Mazatlan. The bird found 

 at Plomosas, farther up in the mountains of the same district, is A. r. pallida; con- 

 sequently it is reasonable to suppose that the present form is a lowland bird, extend- 

 ing from the foothills toward the coast. 



2 Possibly a subspecies of A. rufescens. 

 ^ Two specimens. 



* Willi:, tail, culmen, tarsus, and middle toe, sixteen specimens. 

 ^ Four specimens. 

 MVing, tail, culmen, tarsus, and middle toe, fourteen specimens. 



