BIRDS OF NORTH AND MIDDLE AMERICA. 745 



1881, 174, part (Guatemala).— Shakpe, Cat. Birds Brit. Mug., x, 1885, ,395, 

 part ( Volcande Fuego, Volcan de Agua, and Duenas, Guatemala) .—American 

 Ornithologists' Union, Check List, 1886, no. 693, part (Guatemala). 



[BasiUulerus} 6effi Scl.\ter and Salvi.m, Nom. Av. Neotr., 1873, 10, part (Guate- 

 mala) . 



Blcmlmterus'] belli Ridgway, Man. N. Am. Birds, 1887, 532, part (Guatemala). 



Basileuterus belli scitulus Nelson, Auk, xvii, July, 1900, 268 (Todos Santos, 

 Guatemala; coll. U. S. Nat. Mus.). 



BASILEUTERUS BELLI CLARUS Ridgway.i 

 CHILPAlfCINGO WARBLER. 



Similar to B. h. scitulus in the lighter and brighter chestnut of 

 crown and sides of head, more extensively chestnut lores, and brighter 

 yellow of under parts, but tarsus much longer and olive-green of 

 upper parts lighter and more yellowish even than in B. h. lelli. 



AdaiU mcde.—LiQwgt}! (skins), 124-125 (124.5); wing, 63; tail, 59-60 

 (59.5); exposed culmen, 10; tarsus, 23-24 (23.5).' 



Adult femaZ^.— Length (skins), 115-120 (117.5); wing, 56-58 (57); 

 tail, 53-59 (56); exposed culmen, 9.5-10 (9.7); tarsus, 22-23.5 (22.7).' 



Southwestern Mexico, in States of Guerrero (Chilpancingo) and 

 Jalisco (San Sebastian). 



Basileuterus belli (not Muscicapa belli Giraud) Nelson, Auk, xv, 189S, 159 (Chil- 

 pancingo, Guerrero; San Sebastian, Jalisco). 



BASILEUTERUS RUFIFRONS RUFIFRONS (Swainson). 

 RUFOUS-CAPPED WARBLER. 



Adults {sexes alike). — Pileum deep cinnamon-rufous or rufous- 

 chestnut, with an indistinct and sometimes nearly obsolete median 

 stripe of paler, this sometimes mixed with grayish, especiallj' on the 

 occiput, and sometimes white anteriorly (on median line of forehead); 

 hindneck and sides of neck olive-gray; rest of upper parts plain graj'- 

 ish olive-green, the edges of greater wing-coverts, remiges, and rec- 

 trices brighter, more yellowish, olive-green; a sharply defined super- 

 ciliary line of white, extending from nostril to sides of nape; lores and 

 a triangular postocular space black or dark grayish, this passing nar- 

 rowly above the eye; upper half (approximately) of auricular region 

 cinnamon-rufous or rufous-chestnut, like pileum; lower portion of 

 auricular region, anterior portion of malar region, and chin white, the 

 first sometimes faintly flecked with grayish; thi-oat, chest, and upper 

 breast lemon or gamboge yellow; lower breast, abdomen, and under 

 tail-coverts white, often tinged with yellow; sides and flanks light 

 huffy brown; bill brownish black; iris reddish brown;' legs and feet 

 light brown (indried skins). 



'Type, no. 143292, coll. U". S. Nat. Mus. (Biological Survey collection), adult male; 

 mountains near Chilpancingo, Guerrero, Dec. 24, 1894; Nelson and Goldman. 

 * Two specimens. ^-C. Sartorius, manuscript. 



