BIRDS OF NORTH AND MIDDLE AMERICA. 103 



covers solidly the exposed surface of lesser wing-covert area paler. 

 (Older specimens showing admixture of black, according to age.) 



Immature female . — Similar to the immature male. 



Northwestern Panama (Mina de Chorcha, Chiriqui); eastern Costa 

 Rica(Tucurriqui; Jimenez; "San Jose;" El Ilogar; Cuabre; Guapiles; 

 Rio Sicsola; LaCristina; Talamanca), through Nicaragua (Matagalpa; 

 Rio Escondido ; San Emilis, Lake Nicaragua) and Honduras (Omoa; 

 Santa Ana) to Guatemala (Los Amates, Yzabal). 



Gymnocichla nudiceps (not Myiothera nudiceps Cassin) Moore, Proc. Zool. Soc. 

 Lond., 1859, 55 (Omoa, Honduras; halnts). — Sclater and Salvin, Proc. 

 Zool. Soc. Lond., 1859, 119 (Omoa). — Lawrence, Ann. Lye. N. Y., ix, 

 1868, 109 (Tucurriqui, Costa Rica).— Frantzius, Journ. fur Orn., 1869, 305 

 (Costa Rica). 



Gymnocichla chiroleuca Sclater and Salvin, Proc. Zool. Soc. Lond., 18G9, 417 

 (Tucurriqui, Costa Rica; coll. Salvin and Godman). — Sclater, Cat. Birds 

 Brit. Mus., XV, 1890, 272 (Tucurriqui, Costa Rica; Honduras).— Ridg way, 

 Proc. U. S. Nat. Mus., xiv, 1891, 4G9 (Santa Ana, Honduras; descr. female 

 and young male). — Salvin and Godman, Biol. Centr.-Am., Aves, ii, 1892, 

 224.— Richmond, Proc. U. S. Nat. Mus., xvi, 1893, 501 (Rio Escondido, 

 Nicaragua; habits, notes, etc.). — Dearborn, Pub. 125, Field Mus. Nat. 

 Hist., 1907, 109 (Los Amates, Guatemala). 



G[ymnocichla] chiroleuca Salvin, Ibis, 1869, 314, 318. 



[G-ymnocichla] chiroleuca Sclater and Salvin, Norn. Av. Neotr., 1873, 73. — 

 Sharpe, Hand-list, iii, 1901, 32. 



Gymnocichla cheiroleuca Carriker, Ann. Carnegie Mus., vi, 1910, G21 (Caribbean 

 lowlands to about 1,000 ft., Costa Rica; habits). 



Myrmelasies lawrencii Salvin and Godman, Biol. Centr.-Am., Aves, ii, sig. 29, 

 March, 1892, 226 (Mina de Chorcha, Chiriqui, Panama; coll. Salvin and 

 Godman). 



Myrmelastes lawrencei Richmond, Proc. U. S. Nat. Mus., xvi, 1893, 502 (Rio 

 Escondido, Nicaragua). 



\_Myrmclastes\ lawrencei Sharpe, Hand-list, iii, 1901, 32. 



Genus MYRMECIZA Gray. 



Myrmeciza Gray, List Gen. Birds, 1841, 34. (Tj-jje, Myrmothera longipes Vieillot.) 

 Myrmonax a Cabanis, in Wiegmann's Archiv fur Naturg., xiii, pt. i, 1847, 210. 



(Type, Myrmothera longipes Vieillot.) 

 Myrmelastes Sclater, Proc. Zool. Soc. Lond., 1858, 274. (Tyj^e, M. j^lumheus 



Sclater.) 



Medium-sized Formicariida; (length about 130-165 mm.) resem- 

 bling Gymnociclila but loral and suborbital regions feathered (only 

 the postocular and rictal regions naked), tail relatively shorter (two- 

 thirds to three-fourths, instead of four-fifths, as long as wing), the 

 adult males not black (or else without wliite tips to wing-coverts). 



Bill shorter than head, rather slender to moderately stout, its 

 width at frontal antise equal to or slightly greater than its depth at 

 same point and equal to nearly if not quite half the distance from 

 nostril to tip of maxilla; culmen distinctly (sometimes rather sharply) 



a p.upnoi;=ii'jpnTi^, Ameise; aWf, Herrscher, tyrannus. (Cabanis.) 



