164 DENDEOCOLAPTIDiE. 



XENOPS. 



Xenops, Illiger, Prodr. p. 213 (1811) ; Scl. Cat. Birds Brit. Mus. xv. p. 110. 



An easily recognized genus from the peculiar form of the bill, the culm en of which 

 is straight, the tomia of both maxilla and mandible ascending in a gradual curve, and 

 the lower edge of the mandible is also curved rather abruptly upwards, the whole bill 

 being much compressed in the middle. 



Only two species are now admitted of the genus Xenops, though others have been 

 claimed as distinct. Their ranges are nearly coincident, and extend over the greater 

 part of Tropical America. X. rutilus, however, only reaches Costa Eica, whereas 

 X. genibarbis spreads northwards to Eastern Mexico. 



The wings of both species are coloured in the same way as those of Sittosomus, 

 Margarornis, and Glyphorhynchus — that is to say, they have a tawny transverse band 

 extending to all but the three outer primaries. The anterior toes are all closely united 

 at the base ; the middle toe considerably exceeds the lateral toes in length and is a 

 little longer than the hallux. The tail is soft at the end and the feathers rounded ; 

 the coloration of the tail is peculiar, being cinnamon, with the inner webs of the 

 third and fourth feathers from the outside black. 



1. Xenops genibarbis. 



Xenops genibarbis, 111. Prodr. p. 213'; Temm. PI. Col. 150. f . 1 "; Scl. & Salv. P. Z. S. 1879, 



p. 523'; Scl. Cat. Birds Brit. Mus. xv. p. 110*. 

 Xenops mexicanus, Scl. P. Z. S. 1856, p. 289 ' ; 1859, p. 382 ' ; Lawr. Ann. Lye. N. Y. vii. p. 320 ' ; 



ix. p. 106 = ; Salv. Ibis, 1861, p. 353 ' ; P. Z. S. 1867, p. 143 " ; 1870, p. 192 " ; Scl. & Salv. 



P.Z.S. 1864, p. 354''; Nomeacl. Av. Neotr. p. 66"; Frantz. J. f. Orn. 1869, p. 304'*; 



Sumichrast, Mem. Bost. Soc. N. H. i. p. 555 " ; La Nat. v. p. 247 '"; Sanchez, An. Mus. 



Nac. Max. i. p. 97 ". 



Supra rufescenti-brunneus, capite obscuxiore, uropygio ferrugineo-rufo, loris albicantibus, stria superciliari 

 elongata pallide cervina, regione auricular! brunnea cervino striate infra earn plaga elongata nitide alba : 

 subtus brunneus, gula albicante ; alis nigris cinnamomeo terminatis, secundariis intimis cinnamomeis 

 fascia lata mediana obliqua per remiges interiores et secundarios proximos transeunte cinnamomea, 

 remigibus extemis extus cinnamomeo limbatis, subalaribus quoque cinnamomeis ; cauda cinnamomea 

 reetricibus duabus utrinque mediis proximis nigris, duabns iis exterioribus ad basin gradatim nigris : 

 rostro et pedibus corylinis, iUius mandibula pallidiore et infra albicante. Long, tota 5-0 alse 2-7 

 caudae rectr. med. 2-1, rectr. lat. 1-6, rostri a rictu 0-63, tarsi 0-6. (Bescr. maris ex Teapa, ilexico. 

 Mus. nostr.) 

 5 mari similis. 



Hob. Mexico, Vera Cruz {Sanchez i^), Cordova {Salle *), Playa Vicente {Boncard % 

 Uvero {Sumichrast ^% Teapa {Mrs. H. H. Smith) ; British Honduras, Oran<^e 

 Walk {Gaumer), Cayo {Blancaneaux) ; Guatemala, Choctum {0. S. & F. D. G. ^) • 

 Costa Rica, Angostura, San Jose, Pacuar, and Grecia {Carmiol^), Tucurriqui 

 {Arce) ; Panama, Bugaba ii, Bibalaz, Calovevora ^i, Santa Fe lo {Arce), Lion Hill 



