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BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



chin, and throat uniform black, the first with a small central spot 

 of white ; band across f oreneck and extending thence to hindneck and 

 supra-auricular region and terminal portion of auricular region 

 chestnut, duller laterally; under parts plain deep sooty grayish, 

 darkest on chest (where sometimes strongly tinged with olive), 

 paler on abdomen (where sometimes inclining to buffy whitish), the 

 sides and flanks olive or mixed sooty gray and olive; under tail- 

 coverts light brown (nearly raw-umber), the longer ones mostly 

 blackish, margined terminally with light brown; under wing-coverts 

 buff, broadly tipped with dark sooty brown; inner webs of remiges 

 crossed by a broad band of tawny-buff anterior to their middle por- 

 tion; bill black; iris brown; legs and feet brownish (in dried skins). 



Young. — Essentially like adults but black of throat, etc., replaced 

 by dark sooty brown; chestnut band across f oreneck narrow and 

 more or less broken, and general color of under parts more sooty. 



Adult male. —Length (skins), 150-181 (173); wing, 87.5-94 (90.6); 

 tail, 50-55 (52.9); culmen, 20.5-22 (21.2); tarsus, 30.5-33 (31.7); 

 middle toe, 19-21 (20). « 



Adult female.— Length (skins), 155-175 (167); wing, 85.5-92.5 

 (89.2); tail, 51-56 (53.5); culmen, 20-21 (20.7); tarsus, 30-33 (31.3); 

 middle toe, 20.^ 



Southeastern Mexico, in States of Vera Cruz (Cordova; Playa 

 Vicente; Cerro de la Defensa; Atoyac; Motzorongo; Buena Vista), 

 Oaxaca (mountains near Santo Domingo) and Tabasco (Teapa) and 

 Guatemala (Choctiim; Chisec; Coban; sources of Rio de la Pasion; 

 Kampamac; Tactic; Nehaj, Quiche). 



Formicarius moniliger Sclater, Proc. Zool. Soc. Lond., 1856, 294 (C6rdova, Vera 

 Cruz, Mexico; coll. A. Salle, now in coll. Brit. Mus.) ; 1858, 278, part (Vera Cruz) ; 

 1859, 383 (Playa Vicente, Vera Cruz); Cat. Am. Birds, 1862, 191 (Oaxaca); Cat. 

 Birds Brit. Mus., xv, 1890, 303, part (C6rdova, Vera Cruz; Oaxaca; sources 

 Rio de la Pasion and Choctum, Guatemala).— Salvin, Ibis, 1861, 353 (Chis6c, 

 centr. Guatemala); Proc. Zool. Soc. Lond., 1866, 75 (Mexico; Guatemala; 

 monogr.).— SuMiCHRAST, Mem. Bost. Soc. N.H.,i, 1869,556 (hot region Vera 

 Cruz, up to 800 m.; habits; notes); La Naturaleza, v, 1881, 248 (do.). —Sal- 



