216 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 
AUTOMOLUS GUERRERENSIS Salvin and Godman. 
GUERRERO AUTOMOLUS. 
Most like A. rubiginosus but coloration of upper parts and under 
parts of body much paler, the back, etc., raw-umber brown instead 
of tawny-brown or mummy brown, the pileum concolor with back 
instead of decidedly darker. 
Adults (sexes alike).—Pileum, hindneck, back, scapulars, and rump 
plain raw-umber brown, passing into cinnamon-rufous on upper tail- 
coverts; tail clear rufous-chestnut; wings more rufescent than color 
of back, etc., sometimes rufous-brown or russet, the secondaries and 
proximal greater coverts sometimes nearly concolor with back; sides 
of head nearly concolor with pileum but rather more rufescent, 
especially on supra-auricular region, the auricular region rather 
duller or more grayish brown, with very narrow and indistinct shaft- 
streaks of paler; malar region, sides of neck, chest, and throat plain 
dull cinnamon-rufous or tawny-rufous, the chin (sometimes upper 
throat also) paler (more tawny-ochraceous or ochraceous-buff) ; 
abdomen and median portion of breast deep buff or clay color, 
shading into light raw-umber or tawny-olive on sides of breast, sides, 
and flanks, the under tail-coverts more rufescent (shorter coverts 
cinnamon, passing into russet or rufous-tawny on the longer ones); 
axillars and under wing-coverts clear buff-tawny, the inner webs of 
remiges with basal half or more similar but slightly paler; maxilla 
dark horn color becoming paler toward tomium, darker on basal portion 
of culmen; mandible horn color, the lower portion (broadly) pale dull 
yellowish (in dried skins); legs and feet horn color (in dried skins). 
Adult male.—Length (skins), 203-213 (206); wing, 91.5-95 (93.2); 
tail, 83-84 (83.3); culmen, 23.5-24 (23.8); tarsus, 26-27.5 (26.5); 
middle toe, 21.5-22 (21.7).¢ 
Adult female—Length (skin), 212; wing, 88; tail, 80; culmen, 23; 
tarsus, 25.5; middle toe, 20.° 
Mountains of southwestern Mexico, in States of Guerrero (Omil- 
teme) and western Oaxaca (Pluma), 
Automolus guerrerensis Satvin and Gopman, Biol. Centr.-Am., Aves, ii, sig. 20, 
July, 1891, 157 (Omilteme, Guerrero, s. w. Mexico; coll. Salvin and God- 
man). 
[Automolus] guerrerensis SHARPE, Hand-list, iii, 1901, 66. 
Automolus pectoralis Netson, Auk, xiv, Jan., 1897, 54 (Pluma, Oaxaca, s. w. 
Mexico; coll. U. 8. Nat. Mus.). 
AUTOMOLUS FUMOSUS Salvin and Godman. 
SOOTY AUTOMOLUS. 
Above deep smoke brown, pileum darker, rump deep rufescent 
(‘saturate rubiginoso”), tail darker; wings externally concolor 
@ Three specimens. b One specimen. 
