556 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



region, and outer side of auricular region; chin and upper throat 

 finely mottled dull light tawny; a white patch, about 12.7 mm. wide, 

 across lower throat; feathers of chest much elongated, especiall}' 

 posteriorly, the prevailing color finely mottled light chestnut or 

 chestnut-tawny, becoming gradually grayer and more distinctly 

 mottled posteriorly, where some of the longer feathers have narrow 

 whitish tips, preceded by a dusky bar; breast nearly uniform tawny- 

 chestnut; sides paler, and marked with larger whitish and smaller 

 blackish sagittate spots; belly, anal region, and under tail-coverts 

 buffy, indistinctly barred or transversely spotted with darker and 

 paler; length (skin), 203; wing, 124.5; tail, 106.7; culmen, 5; tarsus, 

 16.5; middle toe, 17.8; hind toe, 5.1.^^ 



According to Messrs. Salvin and Godman (Biol. Centr.-Am., 

 Aves, ii, 1892, 391), the male described above "is in much grayer 

 plumage than the female type, as represented in the figure" (Auk, 

 viii, 1891, pi. 1); and, although JVIr. Hartert (Cat. Birds Brit. Mus., 

 xvi, 1892, 581) expresses himself to the same effect, his description 

 (quoted above) does not seem to indicate very material difference. 

 It is probable, however, that the sexes differ in color, as do those 

 of Nydagreus yucatanicus, in which the female is conspicuously more 

 rufescent than the male. 



Northwestern Mexico, in States of Chiliudhua (Sierra Madre) and 

 Jalisco (Hacienda San Marcos, Zapotlan); Sonora?;^ Vera Cruz 

 (Jalapa)?^ 



Otophanes mcleodii Brewster, Aiik, v, no. 1, Jan., 1888, 89 (Sierra Madre of ('hi- 

 huahua; coll. W. Brewster). — [Allen], Aiik, viii, 1891, pi. 4. 



Otophanes mcleodi Hartert, Cat. Birds Brit. Mus., xvi, 1892, 581 (Hacienda de 

 San Marcos, Zapotlan, Jalisco; descr. adult male). — Salvin and Godman, 

 Biol. Centr.-Am., Aves, ii, 1894, 391. 



0[tophanes]mdeodlJlAnTERT, Tierreich, Podarg., Caprim., Macropt., 1897, 34. 



[Otophanes] mcleodi Sharpe, Hand-list, ii, 1900, 83 (Sonora to Jalapa, Vera Cruz). 



Genus NYCTAGREUS Nelson. 



Nydagreus c Nelson, Proc. Biol. Soc. Wash., xiv, Sept. 25, 1901, 171. (Type, 



Caprimulgus yucatanicus Hartert.) 

 Nyctiagrius (emendation) [Sclater], Ibis, 1902, 345. 



Small Caprimulginse (length about 190-200 mm.) resembling the 

 genus Otophanes but differing in much more slender and nearly straight 

 rictal bristles, shorter and less pointed latero-occipital feathers (not 

 forming distinct ''ear-tufts") and with feathers of loral and super- 

 ciliary regions not forming a projecting ridge along each side of 

 pileum ; tail and tarsus relatively longer. 



a Description from the type of the species, no. 14123, coll. William Brewster; 

 Sierra Madre of Chihuahua, Dec. 6, 1884; Pt. R. McLeod, collector. 

 b According to Sharpe (Hand-list, ii, 1900, 83). 

 c A^if =night; dj-psu^^^hnntei. (Nelson.) 



