BIRDS OF NORTH AND MIDDLE AMERICA. 37 



THAMNOPHILUS RADIATUS NIGRICRISTATUS (Lawrence). 



BLACK-CRESTED ANTSHRIEE. 



Similar to T. doliatus and its subspecies "- but adult males with 

 elongated feathers of pileum entirely black. Still more like T. radiatns 

 radiatus ^ but coloration darker, in both sexes. 



Adult male. — Pileum, except sides of occiput (supra-auricular region) 

 and more or less of forehead, uniform black (without concealed white, 

 except, sometimes, a very little on the occiput); rest of upj^er parts 

 black barred, more or less broadly, witli white, the white bars never 

 as wide as the black interspaces, sometimes reduced to transverse 

 spots; forehead usually more or less (sometimes extensively) streaked 

 with white; sides of occiput (supra-auricular region), streaked ■wath 

 black and white, the black streaks usually broader than tlie white 

 ones; auricular and malar regions and sides of neck similarly streaked, 

 but the black streaks rather narrower; under parts white, the chin 

 and throat usually streaked (sometimes broadly) with black, the 

 remaining under parts (except, sometimes, abdomen) barred with 

 black, the black bars usually much narrower than the white inter- 

 spaces but sometimes nearly as broad, especially on flanks; maxilla 

 blackish, paler on tomium; mandible grayish (sometimes whitish ter- 

 minally and on tomium), bluish gray m life; iris straw color ;'^ legs and 

 feet dusky (bluish gray in life?); length (skms), 138-158 (149); 

 wing, 67.-5-72 (70.2); tail, 54-61 (56.8); culmen, 17-19.5 (18.3); 

 tarsus, 26-27.5 (26.7); middle toe, 14.5-17 (16.4).'^ 



Adult female. — Pileum deep chestnut, becoming paler (more tawny) 

 on forehead; hindneck broadly streaked with black and ochraceous 

 or tawny; wings and tail uniform deep cinnamon-rufous or chestnut- 

 rufous, the back, scapulars, and rump similar but usually lighter 

 and more ta^vny-rufous; sides of head (including supra-auricular 

 region) buffy whitish, buffy, ochraceous, or pale tawny, streaked 

 (except on lores) with black, the black streaks broader on supra- 

 auricular region, narrower (sometimes nearly obsolete) on anterior 

 portion of malar region; chin and throat immaculate, very pale buffy 



« The individual variation in this form seems to include as great extremes of 

 coloration, as regards relative width of black and white bars in the adult male 

 and intensity of coloration in the female, as is covered by the geographic variations in 

 T. doliatus! 



b Tha7nnophilus radiatus Yieillot, Nouv. Diet. d'Hist. Nat., iii, 1816, 315; Sclater, 

 Cat. Birds Brit. Mus., xv, 1890, 210. Several subspecies have been described, but 

 I have not been able to secure sufficient material to enal)le me to characterize 

 them satisfactorily. They are involved in much confusion and require careful 

 revision. 



c W. W. Brown, jr., on label. 



<^ Thirteen specimens from Panama (mainland). 



