BIRDS OF NORTH AND MIDDLE AMERICA. 418 



bb. Pileuiii nut darker than back, slatc-grayisli instead of olive; \ving-l)ands \'ery 

 sharply defined; under wing-coverts light buff or l)uff-yellow. (Eastern and 



southern Brazil.) Camptostoma obsoletum (extralimitalj « 



aa. Under parts distinctly light yellowivsh; wing-bands narrower, pale yellow or yellow- 

 ish white. ( Camptostoma pusillum.) 

 b. Under parts less strongly yellow; smaller (male averaging: wing 50.7, tail 3().2). 

 c. Upper parts lighter olive, with pileum olive or olive-brown. (Caribbean coast 



slope of Colombia.) Camptostoma pusillum pusillum (extralimital) 6 



cc. Upper parts darker olive, with pileum more sooty. (Venezuela and Trinidad 



to lower Amazon Valley. ) Camptostoma pusillum napaeum (extralimital) c 



bb. Under parts more strongly yellow ; larger (male averaging: wing 52.5, tail 38.4). 

 (Panama and western Costa Rica.) . . .Camptostoma pusillum flaviventre (p. 417) 



a Mascicapa obsoleta Temminck, PI. Col., iij, 46 livr.. May, 1824, pi. 275, fig. 1 (Bra- 

 zil). — Muscicapara obsoleta D'Orbigny, Voy. Amer. Merid., Ois., 1839, 328. — E[lania] 

 obsoleta Hartlaub, Syst. Verz., 1844, 53. — Elania obsoleta Lichtenstein, Verz. Mus. 

 Brem., 1854, 53. — Elainea obsoleta Burmeister, Syst. Ueb. Th. Bras., ii, 1856, 480.— 

 T)/rannulus obselctus Temminck, Tabl. Meth., 1838, 27. — M[yiopatis] obsoleta Cabanis 

 and Heine, Mus. Hein., ii, 1859, 58, footnote. — Eupsilostoma obsoletum Sclater, Cat. 

 Am. Birds, 1862, 215.— Ornithion obsoletmn Sclater, Proc. Zool. Soc. Lond., 1873, 578 

 (Sao Paulo, Parana, and Goyaz, s. Brazil); Cat. Birds Brit. Mus., xiv, 1888, 127 (Ypa- 

 nema, s. e. Brazil). — Tlylophiliis cinerascens Maximilian, Beitr. Naturg. Bras., iii, pt. ii, 

 1831, 723 (Barra de Jucu, Brazil; type now in coll. Am. Mus. N. H.). — Ornithion cin- 

 erascens Allen, Bull. Am. Mus. N. H., ii, June 28, 1889, 148, 231 (crit.); iv, 1892, 334 

 (Chapada, Mattogrosso, crit.). — Elaenea murina (not Platyrhynchus murinus Spix) 

 Burmeister, Syst. Ueb. Th. Bras., ii, 1856, 481. — Renggerornis leucophthalmus Bertoni, 

 Aves Nuevos del Paraguay, Jan., 1901, 130 (Puerto Bertoni, Paraguay; see Lynch- 

 AiTibalzaga, An. Mus. Nac. Buenos Aires, vii, 1902, 166). 



b M[yiopatis] j:)usilla Cabanis and Heine, Mus. Hein., ii, Sept., 1859, 58, footnote (Car- 

 tagena, Colombia; coll. Berlin Mus.). — Ornithion pusillum. Sclater, Proc. Zool. Soc. 

 Lond., 1873, 577, part (monogr.); Cat. Birds Brit. Mus., xiv, 1888, 126, part (Bogota, 

 Colombia); Bangs, Proc. Biol. Soc. Wash., xii, 1898, 136 (Santa Marta, Colombia); 

 Allen, Bull. Am. Mus. N. H., xiii, 1900, 148 (Bonda, Santa Marta).— (?) Ornithion 

 imberbe (not Camptostoma imberbe Sclater?) Berlepsch, Journ. fiir Orn., 1884, 301 

 (Bucaramanga, n. Colombia; ci'it.). 



c Camptostoma imberbe (not of Sclater) Taylor, Ibis, 1864, 86 (Trinidad; crit.). — 

 Myiopatis pnsilla (not of Cabanis and Heine) Leotaud, Ois. Trinidad, 1866, 234. — 

 Ornithion pusillum. Sclater, Proc. Zool. Soc. Lond., 1873, 577, part (Mexiana, lower 

 Amazon; Guiana; Trinidad); Cat. Birds Brit. Mus., xiv, 1888, 126, part (Venezuela; 

 Trinidad; British Guiana; Surinam; Cayenne; Mexiana; Para; Bahia?); Salvin, Ibis, 

 1885, 294 (British Guiana); Allen, Bull. Am.Mus.N.H., iv, 1892,54(Carupano,Venezu- 

 ela; crit.); Chapman, Bull. Am. Mus. N. H., vi, 1894, 38 (Trinidad; notes); Berlepsch 

 and Hartert, Novit. Zool., ix, 1902, 42 (Suapure, Altagracia, Caicara, etc., Venezuela, 

 crit.). — Camptostoma flaviventre (not of Sclater and Salvin, 1864) Sclater and Salvin; 

 Proc. Zool. Soc. Lond., 1867, 577 (Mexiana). — Ornithion napaeum Ridgway, Proc. U.S. 

 Nat. Mus., X, sig. 33, Aug. 6, 1888, 520 (Diamantina, lower Amazon Valley; coll. U. S. 

 Nat. Mus.); Chapman, Auk, vii, 1890, 270 (Santarem). 



Besides these, tliree related forms have been described, as follows: 



Camptostoma [pusillum ?] sclateri (Berlepsch and Taczanowski). 



Enpsilostoma pusillum.inoi Myiopatis pusilla Cabanis and Heine) Sclater, Proc. Zool. 

 Soc. Lond., 1860, 68 (Pallatanga, w. Ecuador; coll. P. L. Sclater), 283 (Babahoyo, w. 

 Ecuador); Cat. Am. Birds, 1862, 215 (Pallatanga and Babahoyo, w. Ecuador); Proc. 



