1915.] Chapman, New Colombian Birds. 647 
we have in the bird here described a form of a Tropical Zone species appar- 
ently isolated on the Temperate Zone Savanna of Bogota. 
This fact, in connection with the bird’s degree of differentiation, suggests 
its specific distinctness, but although I believe that actual intergradation 
does not occur I feel that the bird’s relationships are best expressed by a 
trinomial. We are indebted for the type and only specimen of this new 
form to Brother Apolinar Maria, Director of the Institute de la Salle, of 
Bogota, whom we have to thank for invaluable codperation in our study of 
the birds of that region. 
It is to be hoped that Brother Apolinar will make exhaustive collections 
of the birds of the Bogoté Savanna, the only place, so far as I am aware, 
in the Temperate Zone of the Colombian Andes suitable for habitation by 
plains- and marsh-haunting birds. 
Microcerculus squamulatus antioquensis subsp. nov. 
Char. subsp.— Most closely resembling M. squamulatus corassus (Bangs), but 
averaging larger with a longer bill; underparts more strongly and definitely barred; 
upperparts, flanks, ventral region and under tail-coverts darker, more rufescent 
cinnamon-brown instead of Saccardo’s umber. 
Differing from M. squamulatus teniatus (Salv.) in the color of the upperparts, 
flanks and ventral region as it does from corassus, and in having the feathers of the 
breast and upper abdomen basally black and more narrowly white subterminally. 
Differing from M. squamulatus squamulatus Scl. & Salv. in having the breast and upper 
abdomen regularly and sharply barred with black and white instead of being whitish, 
narrowly and weakly barred with blackish or whitish, more or less suffused with 
grayish or brownish and irregularly marked or mottled with broken bars, shaft- 
streaks or hastate-crescents of black. 
Type.— No. 134006, Am. Mus. Nat. Hist., o& ad., Dabeiba (alt. 2000 ft.), Rio 
Sucio, Antioquia, Western Colombia; Feb. 26, 1915; Miller and Boyle. 
Remarks.— Miller and Boyle sent two-males of this form from Dabeiba 
and a third from Alto Bonito. For comparison I have one specimen of 
M. s. teniata, four specimens of M. s. corassus, including the type-loaned by 
Mr. Bangs, and two specimens from Don Diego, Santa Marta, from Mr. 
Todd, who also sends four specimens from Las Quigas, and one from La — 
Cumbre, Venezuela, which I assume are M. s. squamulatus; though they were 
taken nearer the type-locality of M. pectoralis Rich. (Proc. U. 5S. N. M., 
XXIV, 1902, p..178; La Guayra).. There is, however, so much variation 
shown by this series, which contains individuals resembling Sclater’s plate 
(P. Z. S., 1875, pl. vi) and Richmond’s description, that I suspect pectoralis 
is not separable from squamulatus. I have not, however, seen topotypical 
specimens of the latter nor is their examination apparently essential in this 
