608 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



KEY TO THE SPECIES AND SUBSPECIES OF HENICOKHINA. 



a. Breast, white. 



b. Pileum and hindneck uniform deep black; malar region unstreaked white; no 

 black submalar streak. (Guiana, Venezuela, and upper Amazon basin.) 



Henioorhina leucosticta (extralimital)« 



hb. Pileum and hindneck brown or sooty grayish medially (more or less broadly) ; 



malar region streaked with black; a black submalar streak. 



o. Remiges distinctly barred with black; white of under parts purer; white 



superciliary stripe broader. {Henicorhinaproslheleuca.)i 



d. Median portion of pileum and hindneck grayish brown or sooty grayish; 



brown of back, etc., duUer; flanks duller brown (mummy brown or 



somewhat olivaceous) ; feet smaller (tarsus averaging 22.2 in male, 21.5 



in female; middle toe 14.7 in male, 13.9 in female). (Southern Mexico 



to eastern Nicaragua.) Henicorhina prostheleuca prostheleuca Xp. 610) 



(id. Median portion of pileum and hindneck more decidedly brown (some- 

 times almost chestnut) ; back, etc., chestnut-brown or chestnut; flanks 

 brighter brown (bright russet); feet larger (tarsus averaging 23.5 in 

 male, 21.8 in female; middle toe averaging 16 in male, 14.8 in female). 

 (Costa Rica to line of Panama Railway.) 



Henicorhina prostheleuca pittieri (p. 612) 

 CO. Remiges without distinct, if any, black bars; white of under parts duller; 

 white superciliary stripe narrower. ( Northern Ecuador. ) 



Henicorhina inornata (extralimital)<; 

 aa. Breast gray (more or less deep). 



b. Breast deep ash gray or nearly slate-gray. (Henicorhina leucophrys.) 

 c. Coloration darker, the pileum broadly black laterally, sometimes wholly 

 black (usually black with median portion more or less brownish); back, 

 etc., chestnut-brown or chestnut; flanks deep russet or chestnut. 

 d. Pileum black, slightly if at all brownish medially; black postocular stripe 

 broader, anteriorly extending beneath eye to lores. (Peru.) 



Henicorhina leucophrys leucophrys (extralimital)'' 



o Cyphorhinus leucostictus Cabanis, Wiegmann's Archiv. fur Naturg., xiii, pt. i, 

 1847, 206, part (description from Guiana specimen; ex Troglodytes leucosticlua hichien- 

 stein, manuscript, in Berlin Mus. ). — Heterorhina leucosticta Baird, Review Am. Birds, 

 Aug., 1864, 117, part (Rio Napo, e. Ecuador). — Henicorhina leucosticta Salvin and 

 Godman, Biol. Centr.-Am., Aves, 1880, 79, part (Guiana; Venezuela; Ecuador; 

 Colombia?); Sharpe, Cat. Birds Brit. Mus., vi, 1881, 287 (Bartica Grove, British 

 Guiana; Ecuador) . 



b H. prostheleuca may possibly intergrade with H. leucosticta, but I have not seen 

 any evidence that such is the case. The Panama example referred to the latter by 

 Professor Baird (Review Am. Birds, p. 177), now before me, certainly does not 

 show any inclination toward the characters of that form. 



<: Henicorhina inornata Hellmayr, Journ. fiir Orn., Oct., 1903, 528 (Lita, n. w. 

 Ecuador; coll. Zool. Mus. Monaco). 



d Trloglodytes] leucophrys Tschudi, in Wiegmann's Archiv. fiir Naturg., x, pt. i, 

 1844, 282 (Peru); Troglodytes leucophrys Tschudi, Fauna Peruana, Aves, 1847-49, 

 185. — Oyphorhinus leucophrys Cabanis, in Wiegmann's Archiv. fiir Naturg., 1847, 

 pt. i, 206. — Heterorhina leucophrys Baird, Review Am. Birds, Aug., 1864, 118, part 

 (in synonymy). — Henicorhina leucophrys Salvin and Godman, Biol. Centr.-Am., 

 Aves, i, 1880, 80, part (in synonymy and locality Peru only); Sharpe, Cat. Birds 

 Brit. Mus., vi, 1881, 288, part (in synonymy). — Hlenicorhina}. leucophrys leucophrys 

 Hellmayr, Journ. fiir Orn., Oct., 1903, 531. 



