BIEDS OF NORTH AND MIDDLE AMERICA. 535 



Young female. — Above deep cinnamon-rufous, the scapulars and 

 larger wing-coverts paler cinnamon-rufous; pUeum and nape spotted 

 with black, the spots of variable form; hindneck barred with black- 

 ish; back with large black spots; lesser wing-coverts spotted and 

 barred with black, the larger coverts and secondaries sparsely 

 barred with black, the latter with a large sub terminal spot of black; 

 rump and upper tail-coverts indistmctly barred with grayish black 

 or dusky and with a series of transverse, more or less diamond-shaped, 

 spots of black along median line; primaries and rectrices as in adult 

 female; sides of head nearly uniform deep cinnamon-rufous; under 

 parts cinnamon-rufous for anterior half, passing into pinkish buff on 

 posterior half, everywhere barred with duU black or dusky, the dusky 

 bars much less distinct and farther apart on the buffy posterior por- 

 tions; lower throat rather broadly barred with dull pinkish buff or 

 pale ochraceous-buff. 



High mountains of Costa Rica (Volcan de Irazu ; Volcan de Turri- 

 alba; La Estrella de Cartago; Escazu) and western Panama (Volcan 

 de Chiriqui). 



Antrostomus saturatus Salvin, Proc. Zool. Soc. Lond., Nov., 1870, 203 (Volcan 

 de Chiriqui, Panama; coll. Salvin and Godman). — Ridgway, Proc. U. S. 

 Nat. Mus., xvi, 1893, 614 (Volcan de Irazu, Costa Rica; crit.). — Carriker, 

 Ann. Carnegie Mus., vi, 1890, 504 (Volcan de Irazu, Volcan de Tiu-rialba, La 

 Estrella de Cartago, and Escazu, Costa Rica; descr. adult and young females). 



Caprimulgns saturatus Hartert, Cat. Birds Brit. Mus., xvi, 1892, 572 (Volcan de 

 Chiriqui). — Salvin and Godman, Biol. Centr.-Am., Aves, ii, 1894, 388, 

 pi. 58. 



C[aprimulgus] saturatus Hartert, Tierreich, Podarg., Caprim., Macropt., 

 1897, 42. 



[Caprimulgus] saturatus Sharpe, Hand-list, ii, 1900, 84. 



Antrostornus rufomaculatus Ridgway, Proc. U. S. Nat. Mus., xiv, no. 867, Oct. 

 12, 1891, 465 (Volcan de Irazu, Costa Rica; coll. U. S. Nat. Mus.). 



Genus NYCTIDROMUS Gould. 



Nyctidromus Gould, Icones Avium, ii, 1838, pi. 2. (Type, N. derbyanus Gould.) 

 Eucapripodus Lesson, L'ficho du Monde Savant, 10® an., ser. 2, viii, no. 5, July 



16, 1843, col. 109. (Type, E. rutilus LESSO'!<i = Caprimulgus albicollis Gmelin.) 

 Lucapripodus (typographical error?) Lesson, Compl. ffiuvres de Buffon (L6- 



veque), xx, 1847, 259; Descr. Mam. et Ois., 1847, 259. 



Medium-sized Caprimulginas (length about 225-305 mm.), with the 

 completely naked tarsus longer than middle toe without claw, tail 

 nearly as long as wing and much rounded, tenth primary much 

 shorter than seventh, and primaries unspotted but with a white patch 

 on median portion. 



BiU rather broadly triangular in vertical profile, its length from 

 frontal feathers very slightly exceeding its width at same point. 

 Nostril small, roundish, opening laterally in anterior end of the 

 shghtly inflated nasal fossa. Rictal bristles rather large, but scarcely 



