Vol. XIV 
857 ] NELSON, Vew Birds from Mexico and Guatemala. 6 | 
nigrifrons ; wings and tail blackish, edged with dull grayish; breast black, 
flanks and abdomen, back of yellow pectoral spots, white mixed with 
blackish; under tail-coverts white. 
The type is the only specimen obtained of this beautiful bird. 
It was shot in an old potato field in the forest a little below 10,000 
feet. Others were seen and the bird did not appear to be un- 
common, but not appreciating its distinctness from auduboni at 
the time, I failed to secure additional specimens. 
Its nearest relative is Dendroica nigrifrons Brewster, from 
which, however, it presents various striking differences. It has 
yellow markings of the same shade and distribution as in x/grifrons 
and aududbont. 
This species is dedicated to my assistant, Mr. E. A. Goldman, 
whose services have aided so largely in the formation of the 
collection upon which the present paper is based. 
Basileuterus flavigaster, new species. YELLOW-BELLIED 
WARBLER. 
Type, No. 143265, U. S. Nat. Museum, Dept. Agric. coll., g, Yajalon, 
Chiapas, Mexico, October 17, 1895. Collected by E. W. Nelson and E. A. 
Goldman (Orig. No. 3191). 
Distribution. — From Yajalon, Chiapas, to San Andres Tuxtla, Vera 
Cruz. 
Description of type.— Crown rufous, darker than in rujfifrons, with a 
faintly marked median line of lighter strongest on the forehead; super- 
ciliary stripe white; a white spot just back of and below the ear-coverts 
on the side of the neck, forming the termination of a grizzled whitish 
band which extends back along the side of the head, from the chin, and 
reaches up nearly to the lower eyelid; lores, a narrow line around each side 
of the eye, and a postocular spot black; cervical collar on the sides and 
back of the neck, just back of the rufous crown, olive-shaded, ashy-gray ; 
remainder of upper parts including exposed borders of the wing and tail- 
feathers dark olive green; throat, breast and middle of belly bright 
yellow, but less intense and slightly washed with buffy on the latter; the 
sides of the breast and flanks olive green, shaded with buffy posteriorly; 
the under tail-coverts are buffy. Its size is about the same as rujfifrons. 
This species has the head markings much as in rujifrons, with 
the yellow ventral surface of de/attrizz. Specimens from San 
Andres Tuxtla, Vera Cruz, are not quite so richly yellow below 
as the type. 
