•414 BULLETIN r^O, UNITED STATES NATIONAL MUSEUM. 



CAMPTOSTOMA IMBERBE Sclater. 

 BEARDLESS FLYCATCHEE. 



Adults in spring and summer (sexes alike)."' — Pileum grayisli olive, 

 the feathers more or less distinctly darker (sometimes sooty) medially, 

 forming indistinct streaks; hindneck, l^ack, scapulars, lesser wing- 

 coverts, rump, and ujjper tail coverts plain grayish olive, slightly more 

 olivaceous than general color of pileum ; tail dusky brownish gray or 

 grayish brown, with grayish olive edgings, the rectrices narrowly mar- 

 gined with paler at tip ; wings dusky, the middle and greater coverts 

 broadly (but not abruptly) tipped w^ith light grayish brown or grayish 

 olive, the remiges (except basal portion of secondaries) narrowly edged 

 with ver^^ pale olive or olive-whitish; sides of head grayish olive or 

 olive-grayish, the eyelids and supraloral region paler; chin, throat, and 

 chest pale gra>ash, faintly tinged with pale buffy yellowish, the rest 

 of under ])arts dull yellowish white; axillars and under wing-coverts 

 similar but more decidedly yellowish; bill dark horn color, darker 



ZooL Soc. Lond., 1867, 342 (Lima, Peru; habits); Taczanowski, Proc. Zool. Soc. Lond., 

 1874, 536 (Lima); 1877, 325; Lawrence, Ann. Lye. N. Y., ix, 1869, 236 (Puna I.,w. 

 Ecuador). — Orni/Aion p(mW»m. Taczanowski, Proc. ZooL Soc. Lond., 1879, 234 (Pacas- 

 niayo, n. w. Peru). — Ornithionimber be (not Camptostomaimberbe Sclater) Taczanowski, 

 Proc. Zool. Soc. Lond., 1879, 234 (Guajango, Peru), 1880, 202 (Callacate, n. Peru), 1882, 

 19 (Chirimoto, Peru); (?) Salvin, Cat. Strickland Coll., 1882, 307 (Chili ?; crit.); Scla- 

 ter, Cat. Birds Brit. Mus., xiv, 1888, 126, part (Pallatanga and Santa Rita, w. Ecuador; 

 Lima and Guajango, Peru). — Ornithion sclateri Berlepsch and Taczanowski, Proc. Zool. 

 Soc. Lond., 1883, 554 (Guayaquil, w. Ecuador), 1884, 296 (Cayandeled, w. Ecuador); 

 Reichenow and Schalow, Journ. fiir Orn., 1886, 88 (reprint); Salvadori and Festa, Boll. 

 Mus. Zool., etc., Torino, xv, no. 362, 1899, 7 (Savana de Guayaquil, Balzar, etc., w. 

 Ecuador; synonymy). — Ornithion imberbe sclateri Berlepsch and Stolzmann, Proc. Zool. 

 Soc. Lond., 1883, 380 (Lima, Peru; crit.). 



Camptostomum pusillum olivaceum (Berlepsch). 



Cnmptostoma fiaviventre (not of Sclater and Salvin, 1864) Sclater and Salvin, Proc. 

 Zool. Soc. Lond., 1866, 188 (Upper Ucayali, e. Peru; crit.). — Ornithion pusillum (not 

 Mytopatis pusilla Cabanis and Heine) Sclater and Salvin, Proc. Zool. Soc. Lond., 1873, 

 278 (Upper Ucayali ; crit.).^ — Ornithion pusillum {'?) Taczanowski, Orn. du Perou, ii, 1884, 

 255. — Ornithion pusillum olivaceum Berlepsch, Journ. fin- Orn., xxxvii, no. 187, July, 

 1889, 301, in text (Yquitos, e. Peru; coll. Count von Berlepsch). — [Ornithion] oliva- 

 ceum Sharpe, Hand-list, iii, 1901, 120. 



Camptostoma pusillum juruanum (Ihering). 



Ornithion pusillum juruanum Ihering, Rev. Mus. Paulista, vi, 1904, 434 (Rio Jurua, 

 Province Sao Paulo, s. Brazil; coll. Mus. Sao Paulo). 



a As a rule I am unable to distinguish the sexes by any external characters; Init some 

 males have the feathers of the pileum much longer, especially on the occiput, forming a 

 very distinct-crest, and these elongated feathers are sooty in color, margined with gray- 

 ish olive. It may be that those males resembling females in the color and development 

 of the crest feathers are immature birds. 



