1917.] Chapman, Distribution of Bird-life in Colombia. 375 



gotd' skin. This form is intermediate between the gray M. a. axillaris of 

 Guiana, etc., and the black M. a. albigula (Lawr.) of the Pacific coast. 

 Florencia, 6; La Morelia, 2. 



(1984a) Myrmopagis axillaris albigula {Lawr.). 



Myrmotherula albigula Lawe., Ann. Lye. Nat. Hist. N. Y., VIII, 1867, p. 131. 

 Types Nos. 43401 and 43402, Am. Mus. Nat. Hist., females, Panama R. R. line; 

 McLeannan and Galbraith. 



Myrmotherula axillaris meloena Hellm., P. Z. S., 1911, p. 1162 (N6vita). 



Myrmotherula melmna Cass., Proo. Acad. N. S. Phila., 1860, p. 191 (R. Tniando) ; 

 ScL. & Salv., p. Z. 8., 1879, p. 525 (Nech^). 



Inhabits the Tropical Zone of the Pacific coast of Colombia and Ecua- 

 dor and extends northward to Honduras and eastward into Antioquia. 



This form is characterized by excessive blackness. In the adult male 

 the black areas are shining jet black instead of slate-black as in melosna 

 (Scl.). This character is well shown by two Panama males, seven from 

 western Colombia and nine from western Ecuador. 



Lawrence's inappropriate name of albigula, based on two females from 

 Panama, now in the American Museum, is obviously available for this race. 



Seven males from Trinidad represent the extreme of grayness and are 

 materially lighter than six males from the Potaro River, British Guiana. 



Alto Bonito, 3; Dabeiba, 1; Baudo, 1; Juntas de Taman£, 1; Novita, 

 1; San Jose, 2; Barbacoas, 2; Puerto Valdivia, 1. 



(1985) Myrmopagis schisticolor schisticolor (Lawr.). 



Formidvora schisticolor Lawr., Ann. Lye. N. Y., VIII, 1867, p. 172 (Costa Riea). 

 Myrmotherula schisticolor schisticolor Hbllm., P. Z. S., 1911, p. 1163 (Rio Siat6). 



Inhabits chiefly the Subtropical Zone of the Western Andes and western 

 slope of the Central Andes ranging southward to southwestern Ecuador 

 and northward to Guatemala. 



Alto Bonito, 1; La Frijolera, 3; Las Lomitas, 2; San Antonio, 3; Ri- 

 caurte, 1; Miraflores, 3. 



(1985ffl) Myrmopagis schisticolor interior Chapm. 



Myrmopagis schisticolor interior Chapm., Bull. A. M. N. H., XXXIII, 1914, 

 p. 614 (Buena Vista, Col.). 



Char, subsp. — Male like the male of M. s. schisticolor (Lawr.), female very 

 different from the female of that race, the back slate-gray, not brownish or buffy 



