BIRDS OF NORTH AND MIDDLE AMERICA. 401 



b. Pileiim uniform chestnut, strongly contrasted with the gray of hindneck and 

 sides of head. (Lower Amazon Valley to southeastern Brazil.) 



Xonnula ruficapilla (extralimital).o 



66. Pileum distinctly chestnut only on forehead, the hindneck brown, liko back, 



the gray on sides of head much more restricted. (Eastern Panama to central 



Colombia) Nonnula frontalis (p. 401). 



aa. Under tail-coverts and anal region ochraceous; pileum brown, concolor with back; 

 no gray on sides of head. (Colombia to eastern Peru.) 



Nonnula brunnea (extralimital).& 



NONNULA FRONTALIS (Sclater). 



PANAMA NONNULA. 



Adults {sexes alike). — Pileum plain brown (nearly prouts brown), 

 passing into more chestnut brown on forehead, and posteriorly into 

 lighter olive-brown or sepia brown on hindneck, back, scapulars, 

 wing-coverts, rump, and upper taU-coverts ; remiges and rectrices 

 dusky grayish brown, the secondaries narrowly edged with light 

 ochraceous-brown, the primaries with lighter and more grayish 

 brown; lateral rectrices much paler brown, except on proximal half, 

 more or less, of inner web; loral, superciliary, orbital, and auricular 

 regions mouse gray, rather sharply defined against the reddish brown 

 of pileum, but below and posteriorly passing gradually into light 

 tawny-brown (nearly raw umber) on malar region and sides of neck; 

 chin, throat, and chest plain tawny-ochraceous, the sides and flanks 

 similar but paler (buffy) posteriorly, passing into buff on center of 

 breast and then into buffy white on abdomen; under tail-coverts 

 white; under wing-coverts and broad edgings to inner webs of remiges 

 (except distally) pinkish buff, the carpo-metacarpal region brown; 

 maxilla grayish black; mandible grayish black terminally and along 

 upper edge, otherwise horn color (bluish gray in life?); iris brown;" 

 bare orbital ring pomegranate purple;*^ legs and feet brownish (in 

 dried skins). 



Adult male.— Jjengih (skins), 134-138.5 (136); wing, 58-60.5 (59); 

 tail, 54.5-58.5 (57); exposed culmen, 22.5-23 (22.7); tarsus, 14-15 

 (14.7); outer anterior toe, 11-11.5 (11.1).^ 



o L[ypornix] ruficapilla Tschudi, in Wiegmann's Archiv fiir Naturg., 1844, pt. i, 

 300 (Peru). — M[onasa] ruficapilla Gr&y , Gen. Birds, i, 1846, 74. — Malacoptila ruficapilla 

 Sclater, Ann. and Mag. N. H., ser. 2, xiii, 1854, 480. — [Scotocharis] ruficapilla Bona- 

 parte, Ateneo Italiano, it, 1854, 128 (Consp. Volucr. Zygod., 1854, 13). — Nonnula 

 ruficapilla Sclater, Proc. Zool. Soc. Lond., 1853, 123; Mon. Jacamars and Puff-birds, 

 1882, 137, pi. 46, fig. 1; Cat. Birds Brit. Mus., xix, 1891, 200. 



b Nonnula brunnea Sclater, Ibis, ser. 4, v, Oct., 1881, 600 (Sarayacu, e. Ecuador; 

 coll. P. L. Sclater); Mon. Jacam. and Puff-birds, 1882, 141, pi. xlvi, fig. 2, and text; 

 Cat. Birds Brit. Mua., xix, 1891, 201 (int. Colombia; Rio Napo and Sarayacu, e. 

 Ecuador). 



c W. W. Brown, Jr., manuscript. 



^ Four specimens. 



3622°— Bull. 50, pt 6—14 26 



