BIRDS OF NORTH AND MIDDLE AMERICA. 745 



1881, 174, part (Guatemala) .—Sharpe, Cat. Birds Brit. Mus^., x, 1885, 895, 

 part (VolcandeFuego, Volcan de Agua, and Duenas,Giuitenuila). — American 

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



[Basileutcrux'] 6«//i Sclater and Salvin, Norn. Av. Neotr., 1873, 10, part (Guate- 

 mala) . 



Blasilf'uterusi belli Ridgway, Man. N. Am. Birds, 1887, 532, part (Guatemala). 



Bfmleulerus heJIi fscUnlns Nelson, Auk, xvii, July, 1900, 268 (Todos Santos, 

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



BASILEUTERUS BELLI CLARUS Ridgway." 

 CHILPANCINGO WARBLER. 



Similar to B. b. scltulus in the lighter iiiul briu-hter 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 JJ. h. helU. 



Adult male.— "L&ngth (skins), 12-1:-125 (124.5); wing, 63; tail, 59-60 

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



Adult female. — 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 Se))astian). 



Basileuterus hclli (not MMi^ncapa heHi Giraud) Nelson, Auk, xv, 1898, 159 (Chil- 

 pancingo, Guerrero; 8an Sebastian, Jalisco). 



BASILEUTERUS RUFIFRONS RUFIFRONS ( Swainson). 

 RTJFOUS-CAPPED WARBLER. 



Adults {sexes alil'i). — Pileum deep cinnamon-rufous or rufous- 

 chestnut, with an indistinct and sometimes nearly obsolete median 

 stripe of paler, this sometimes mixed with grayish, especially on the 

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

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

 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 ])lack 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, antei'ior portion of malar region, and chin white, the 

 first sometimes faintl}' flecked with grayish; throat, chest, and upper 

 breast lemon or gamboge yellow; lower })reast, alxlomen, and under 

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

 l)uft'y brown; bill l)rownish 1)lack; 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. 



