592 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



Sylvia icterocephala Vieillot, Ois. Am. Sept., ii, 1807, 31, pi. 90; Nouv. Diet. d'Hist. 

 Nat., xi, 1817, 223; Enc. M6th., ii, 1823, 441.— Stephens, Shaw's Gen. Zool., x, 

 1817, 622.— BoNAPAKTE, Ann. Lye. N. Y., ii, 1826, 80.— Audubon, Orn. Biog., i, 

 1832, 306, pi. 59.— NuTTALL, Man. Orn. U. S. and Can., i, 1832, 380. 



Sylvicola icterocephala Jakdine, ed. Wilson's Am. Orn., i, 1832, 248.— Richardson, 

 Rep. Brit. Assoc, for 1836(1837), 172.— Bonapahte. Geog. andComp. List 1838 

 22.— Audubon, Synopsis, 1839, 54; Birds Am., oet. ed., ii, 1841, 35, pi 81 - 

 Bryant, Proc. Bost. See. N. H., vi, 1857, 116 (Nova Seotia); vii, 1859 110 

 (Bahamas). — Aleeecht, Journ. fiir Orn., 1861, 153 (Bahamas). 



[Sylvicolal icterocephala fieNAPAKTE, Conap. Av., i, 1850, 308. 



Dendrceca icterocephala Sclatee, Proc. Zool. Soc. Lond., 1859, 363 ( Jalapa).— Oaba- 

 Nis, Journ. fiir Orn., 1860, 328 (Costa Eica) . 



Dendroeca icterocephala Sundevall, Ofv. k. Vet.-Akad. Forh. Stockh., xxvi, 1870, 

 612 (monogr. ). 



Dendroica icterocephala Sclatbk, Proc. Zool. Soc. Lond., 1859, 374 (Oaxaca, Apr.). 



lilniotilta'] icterocephala Giebel, Thesaurus Orn., ii, 1875, 603. 



DENDROICA CASTANEA (Wilson). 

 BAT-BREASTED WAKBLER. 



Adult male {suminer and winter). — Forehead, sides of crown and 

 occiput, auricular region, suborbital region, lores, and malar region 

 black, the auricular region usually more or less streaked with whitish 

 or pale buffy ; crown and occiput (except laterally) rich chestnut; sides 

 of neck plain buflf; back and scapulars gray, usually more or less 

 tinged (sometimes strongly) with buffy olive, and broadly streaked 

 with black; rump similar, but with streaks obsolete or concealed; 

 upper tail-coverts gray, with more or less distinct mesial streaks of 

 blackish; tail grayish black or dusky with light-gray edgings, the inner 

 webs of two or three outermost rectrices with a terminal patch of 

 white, that on extei'ior rectrix occupying the terminal third or more; 

 wings grayish black or dusky with light olive-gray or olive edgings, 

 the middle and greater coverts broadly tipped with white, forming 

 two conspicuous bands across wing; thi'oat (sometimes chin also'), 

 chest, sides, and flanks plain light chestnut; rest of under parts plain 

 pale buff or buffy white, the under tail-coverts more decidedly buffy; 

 maxilla dark brown or brownish black, mandible more brownish; iris 

 brown; legs and feet dusky brownish (in dried skins); length (skins), 

 119.4^130.8 (125); wing, 71.6-76.2 (73.4); tail, 51.8-56.4 (53.1); exposed 

 culmen, 9.9-10.9 (10.4); tarsus, 17.5-20.3 (18.3); middle toe, 10.4-11.9 

 (11.2).' 



Adult female {summer and winter). — Essentially similar to the male 

 except in extent of the chestnut, which is often almost entirely absent, 

 and never so strongly marked; whole pileum usually distinctly streaked 

 with black on a gray, olive, or olive-green ground, the crown and 



' The chin, or at least its anterior margin, is usually dusky, sometimes whitish. 

 ' Eight specimens. 



