352 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



Copurus leuconotus Lapresnaye, Rev. Zool., 1842, 335 ("'Bolivia;" error). — 

 Bonaparte, Consp. Av., i, 1850, 194. — Sclater, Pror. Zool. Soc. Lond., 

 1858, 71 (c. Ecuador); 1860, 294 (Esmeraldas, w. Ecuador); 1861. 3S2 

 (Guiana; Colombia; Ecuador); Cat. Am. Birds, 1862, 204 (Cayenne; Bogota, 

 Colombia; Esmeraldas, w. Ecuador); Cat. Birds Brit. Mus., xiv, 1888, 51 

 (Chontales, Nicaragua; Tucurrique and San Jose, Costa Rica; Santa F^, 

 Veragua; Lion Hill and Paraiso Station, Panama R. R.; Remedios and 

 Bogota, Colombia; Cayenne; Esmeraldas, w. Ecuador). — Lawrence, Ann. 

 Lye. N. Y.. vii, 1862, 327 (Lion Hill, Panama R. R.); ix, 1868, 110 (San 

 Jose and Pacuare, Costa Rica). — Sclater and Salvtn, Proc. Zool. Soc. Lond., 

 1864, 358 (Lion Hill, Panama; crit.); 1867, 279 Blewfields R., Nicaragua); 

 1879, 511 (Remedios, Antioquia, Colombia. — Salvin, Proc. Zool. Soc. Lond., 

 1867, 146 (Santa Fe, Veragua; Costa Rica); Ibis, 1872, 318 (Chontales, Nica- 

 ragua); 1885, 291 (British Guiana).— Frantzius, Joum. fiir Orn., 1869, 306 

 . . (Turrialba, Costa Rica).— Wy.a.tt, Ibis, 1871, 332 (Colombia).— Nutting, 

 Proc. U. S. Nat. Mus., vi, 1883, 402 (Los Sabalos, Nicaragua). — Berlepsch, 

 Journ. fur Orn., 1884, 297 (Bucaramanga, Colombia; crit.); 1885, 117 (Esmer- 

 aldas, w. Ecuador). — Salvin and Godman, Biol. Centr.-Am., Aves, ii, 1888, 

 4.— RiDGWAY, Proc. U. S. Nat. Mus., x^ 1888, 589 (Segovia R., s. Honduras).— 

 Richmond, Proc. U. S. Nat. Mus., xvi, 1893, 504 (Rio Escondido, Nica 

 ragua; habits). — Salvabori and Festa, Boll. Mus. Torino, xv, no. 362, 1899, 

 4 (Foreste del Rio Peripa, w. Ecuador). — Hartert, Novit. Zool., ix, 1902, 

 607 (Pambilar, n. w. Ecuador). 



Copurus pcccilonotns Cab Atiis, in Schomhurgk's Re'is. Brit. Guiana, iii, 1848, 703. 



[Copurus] pa:a7ono«its Gray, Hand-list, i, 1869, 346, no. 5215. 



Clopurus] leuconotus Cabanis and Heine, Mus. Hein., ii, 1859,42 (Colombia). 



[Copurus] leuconotus Gray, Hand-list, i, 1869, 346, no. 5214. — Sclater and Salvin, 

 Nom. Av. Neotr., 1873, 44.— Sharpe, Hand-list, iii, 1901, 98. 



Genus ON YCHORHYNCHUS Fischer. 



Musnrora (not of Lacepede, 1799) Cuvieu, "Tabl. Gen. d. Class. d'An., bSOO." 



(T>^e, Todus regius (jvaeHn.) 

 Onychorhynchus Fischer, Zoggnasia, 1813, 31, 42. (Type, by implication, 



Todusrcyius Gmelm.) (See Oberholser, Auk, xviii, 1901, 193.) 

 Muscipeta Ctjvier, Regne Anim., i, 1817, 344. (Type, Todiis regius Gmelin.) 

 Todus (not of Linna?us, 1766) Bonnaterre, Tabl. Enc. Meth.. 1792, 267. (Type, 



T. m/U(s Gmelin.) 

 Megalophus Swainson, Classif. Birds, ii, 1837, 257, (Type, Muscipeta regiu 

 Maximilian = Muscivora sivainsoni Peezeln.) 

 Medium sized Tyrannid^e (wing about 75-90 mm.) with very long, 

 broad and flat bill and very conspicuous fan-shaped transverse crest 

 of yellow, orange, or red, tipped with black and steel blue or metallic 

 violet. 



Bill about as long as head (exposed culmen equal to tarsus and about 

 half the middle toe) , conspicuously depressed, its width at frontal antia? 

 equal to twice its depth at same point, wedge-shaped in vertical profile 

 with lateral outlines slightly convex to near the tip, where they are 

 faintly concave and more strongly converged ; culmen conspicuously 

 ridged, nearly straight to near tip, where abruptly decurved, the tip of 

 maxilla rather strongly unchiate; gonys longer than mandibular 

 rami, nearly straight; maxillary tomium nearly straight, distinctly 



