246 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



Coast district of southern Sinaloa (Tatemalis).' 



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

 loa; coll. Oallfornia Acad. Sci. ). 



AIMOPHILA MCLEODII^ Brewster. 

 McLEOD'S SPARROW, 



In general appearance and size resembling A. rufescens 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 male.— L,ength (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).' 



Adidt female.— Length (skins),161.29-172.72 (166.62);' wing, 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 Eiver; 

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

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

 (Chacala). 



AimopMla mdeodii Bkewstek, Auk, v, Jan., 1888, 92 (El Carmen, Chihuahua; 



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



los Pinitor, n. e. Sonora\ 

 • AimopMla cahooni Brewster, Auk, v, Jan., 1888, 93 (mountains near Oposura, 



Sonora; coll. W. Brewster). 

 Peuciea megarliyncha Salvin and Godmax, Ibis, 6th ser., i, Apr., 1889, 238 (Santa 



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

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



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



AIMOPHILA RUFICEPS RUFICEPS (Cassin). 

 RTJFOUS-CROWNED SPARROW. 



Adults {sexes alike). — Pileum 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 mid- 

 dle of crown and occiput, forming a slight indication of a median 



^ 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. 



^ Possibly a subspecies of A. rufescens. 



' Two specimens. 



* Wing, tail, culmen, tarsus, and middle toe, sixteen specimens. 

 ^ Four specimens. 



• Wing, tail, culmen, tarsus, and middle toe, fourteen specimens. 



