BIEDS OF NORTH AND MIDDLE AMERICA. 269 



anterior claws large, very strongly curved and acute, that of the 

 hallux less strongly curved, shorter than the digit. 



Coloration. — Rump, up})er tail-coverts, tail, and greater part of 

 wings chestnut; back and scapulars brown, olive, or rufescent, the 

 former sometimes narrowly streaked with })aler, imdcr parts lighter 

 brown, more or less distinctly streaked, at least on chest, with 

 })aler, the throat sometimes dull whitish or buil'y. 



Nidification. — Nests in holes of trees; eggs plain white. 



Range. — Costa Rica to Cayenne, southeastern Brazil, Paraguay, 

 Bolivia, ami Peru. (About twelve species.**) 



KEY TO THE SPECIES OF CAMPYLORHAMPHUS. 



a. Bill light reddish brown. 



h. Streaiis on back and chest margined with black. (Western Ecuador.) 



Campylorhamphus thoracicus (extralimital).& 

 bh. Streaks on back and chest without black margins. 

 c. Back cinnamon-rufous, under parts dull tawny or ochraceous. (Southwestern 



Brazil; Paraguay.) Campylorhamphus rufodorsalis (extralimital).c 



cc. Back olive-brown to cinnamon-brown; under ])arts light buffy browu to olive- 

 brown. 

 d. Streaks on pileum, hindneck, and chest much broader. 

 e. Remiges and rectrices cinnamon-rufous; imder parts paler, more buffy, 

 brown. (Campi/lorhamphus trochilirostris .) 

 f. Bill and tail much longer (culmen 69, tail 87 mm.); lower throat more 

 broadly streaked. ("Brazil.") 



Campylorhamphus trochilirostris major (extralimital).«^ 

 ff. Bill and tail much shorter (culmen 55-59, tail 77-83 mm.), the former 

 much more slender; lower throat more narrowly streaked. (Bahia to 

 lower Amazon Valley, eastern Brazil.) 



Campylorhamphus trochilirostris trochilirostris (extralimital).« 



a The following have not been examined in Ihis connection: C. thoracicus (Sclater), 

 C. Idfrcsnayeanus (D'Orbigny), and C. dorso-immaculatus (Cha'pinaji) . 



b Xiphorhynchus thoracicus Sclater, Proc. Zool. Soc. Lond., Aug., 1860, 277 (Baba- 

 hoyo, w. Ecuador; coll. P. L. Sclater); Chapman, Bull. Am. Mus. N. H., ii, 1889, 

 160 (monogr.). — Xiphornis thoracicus Oberholser, Smithson. Misc. Coll., xlviii, no. 

 1579, May 13, 1905, 64. — Xiphorhynchus trochilirostris thoracicus Ilartert, Novit. Zool., 

 ix, Dec, 1902, 616 (San Javier and Pambildr, n. w. Ecuador). 



c Xiphorhynchus rufodorsalis Chapman, Bull. Am. Mus. N. II., ii, no. 3, July 5, 

 1889, 160 (Corumba, Matto Grosso, s. w. Brazil; Coll. Am. Mus. Nat. Hist.). — Xiphornis 

 rufodorsalis Oberholser, Smithson. Misc. Coll., xlviii, no. 1579, May 13, 1905, 64. 



<i Campylorhamphus trochilirostris major Ridgway, new subspecies. (Type, no. 

 32819, coll. U. S. Nat. Mus.; adult male; "Bresil;" from Maison Verreaux.) 



« D[endrocoluptcs] trochilirostris Lichtenstein, Abh. Konigl. Akad. Wissensch. Ber- 

 lin, for 1818-19 (1820), 207, pi. 3 (Brazil; coll. Berlin Mus.; type locality given as 

 Bahia in next vol., p. 263). — X[iphorhynchus'\ ^roc/itZiros^m Maximilian, Beitr. Naturg. 

 Bras., iii, 1831, 1140 (excl. syn. part). — Xiphorhynchus trochilirostris Sclater, Cat. 

 Birds Brit. Mus., xv, 1890, 159, part; Chapman, Bull. Am. Mus. N. H., ii, 1889, 155 

 (monogr.; excl. syn. Dendrocolaptes procurvus Temminck?); Menegaux and Hellmayr, 

 Mem. Soc. Hist. Nat. d'Autun, xix, 1906, 117 (Bahia; crit.; synonymy). — Xiphornis 

 trochilirostris Oberholser, Smithson. Misc. Coll., xlviii, no. 1579, May 13, 1905, 64. 



