394 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



ee. Posterior half of head and entire neck elate-color; remigea Blate-black or 

 blackish slate, broadly edged with slate-gray, not contrasting strongly 

 with color of wing-coverts. 

 /. Larger (wing averaging 128.1, tail 117.9, exposed culmen 32.6); white 

 capistrum larger. (Eastern Brazil, south of Amazon River.) 



Monasa morphoeus (extralimital).« 



ff. Smaller (wing averaging 126.5, taU 112.7, exposed culmen 30.5); white 



capistrum more restricted. (Eastern Ecuador, eastern Peru, and 



Bolivia) Monasa peruana (extralimital).'> 



cc. Only the forehead and lores white or rusty (the chin and malar apex black). 

 d. Wing-coverts slate-gray, concolor with lower back and rump; under wing- 

 coverts slate-gray, 

 e. Chest slate-gray, like breast, abdomen, etc. (Central Colombia.) 



Monasa sclateri (extralimital).c 

 ee. Chest black, like head and neck, abruptly contrasted with slate-gray of 



breast, etc. (Eastern Panama) Monasa similis (p. 399). 



dd. Wing-coverts pale gray, decidedly to much paler than color of lower back 



and rump, at least toward humeral edge of wing; under wing-coverts 



very pale gray to grayish white. 



e. Lower back and rump slate-gray; wing-coverts and under parts of body 



lighter slate-gray, the former still paler toward humeral edge of wing. 



(Southeastern Panama) Monasa minor (p. 398). 



ee. Lower back and rump light slate-gray (dark gull gray), the under parts of 

 body slightly paler (light neutral gray or deep gull gray) ; larger wing- 

 coverts light neutral gray or deep gull gray fading into pale or pallid 

 neutral gray on anterior lesser coverts. (Rio Truando, northwestern 

 Colombia) Monasa pallescens (p. 397). 



a Bucco morphoeus Hahn and Ktister, Vog. aus Asien, lief, xiv, 1822, p. 1, pi. 

 2. — Monasa morphoeus Cassin, Proc. Ac. Nat. Sci. Phila., 1860, 135. — Monasa mor- 

 phseus Sclater, Cat. Am. Birds, 1862, 274 (Brazil). — M[onastd\ morphea Cabanis and 

 Heine, Mus. Hein., iv, heft 1, 1863, 127 (Brazil). — Monacha morpheus Sclater, Mon. 

 Jacam. and Puff-Bu-ds, 1882, 151, pi. 50; Cat. Birds Brit. Mus., xix, 1891, 204.— 

 Monasa personata Vieillot, Gal. Ois., 1820-25, 23, pi. 36 (Brazil; "I'lle de la 

 Trinite.") — B[ucco] leucops Lichtenstein, Verz. Doubl., 1823, -8 (Brazil). — Lypornix 

 Zewcops Wagler, Syst. Av., 1827, Lypornix, sp. 3. — C[apito'\ leucops Maximilian, Beitr., 

 iv, 1832, 368. — T[amatia\ leucops Swainson, Bu-ds Brazil, 1834, pi. 12. — M[onasa 

 leucops Gray, Gen. Birds, i, Dec. 1846, 74. — Monasa leucops Burmeister, Syst. Ueb. 

 Th. Bras., ii, 1856, 293; Pelzeln, Om. Bras., 1868, 22.— Bucco albifrons Spix, Av. 

 Bras., i, 1824, 53, pi. 41, fig. 1 (Prov. Piauhy, Brazil). 



& Monasa peruana Sclater, Proc. Zool. Soc. Lond., 1855, 194 (Chamicuros, e. Peru; 

 coll. P. L. Sclater; ex Bonaparte and Verreaux, manuscript).^ — Monasa morphoeus 

 peruana Hellmayr, Novit. Zool., xiv, 1907, 84 (Teffe, Brazil; crit.). — M[onasta] peru- 

 ana Cabanis and Heine, Mus. Hein., iv, heft 1, 1863, 128. — Monacha peruana Sclater, 

 Mon. Jacam. and Puff-Birds, 1882, 153, pi. 51; Cat. Birds Brit. Mus., xix, 1891, 205 

 (Ega, Pebas, and Chamicuros, e. Peru; Sarayacu, e. Ecuador). 



c Monasa pallescens (not of Cassin) Wyatt, Ibis, 1871, 130, 374 (Paturia, Magdalena 

 Valley, Colombia); Sclater and Sal vin, Proc. Zool. Soc. Lond. ,1879, 536 (Remedies and 

 Nichi, Antioquia, Colombia); Berlepsch, Journ. fiir Orn., 1884, 318 (Bucaramanga, 

 Colombia); Salvin and Godman, Biol. Centr.-Am., Aves, ii, 1896, 521, part. — Mo- 

 nacha pallescens Sclater, Mon. Jacam. and Puff-Birds, 1882, 157, pi. 53; Cat. Birds Brit. 

 Mus., xix, 1891, 206 (Medellinand Remedies, Antioquia; Magdalena Valley; Bogotd). — 

 Monasa sclateri Ridgway, Proc. Biol. Soc. Wash., xxv. May 4, 1912, 89 (Bogotd, Co- 

 lombia; coll. U. S. Nat. Mus.). 



