°i897^^] Nelson, Neiv Birds from Mexico and Guatemala. A*! 



whitish which, contrasting with the blackish centres, produces the main 

 pattern of coloration; tertiaries and wing-coverts similarly colored, but 

 bordered with pale fulvous on inner webs; the fulvous borders heaviest 

 on tertiaries; tail slaty gray, with vermiculations of paler gray and 

 brown ; quills dull brownish, edged on outer borders with ashy; sides and 

 under part of neck with fore part of breast conspicuously marked with 

 white, black and dull chestnut ; sides of breast and flanks dull chestnut, 

 the feathers marked on each side near the tip by a black area succeeded 

 by a white spot; under tail-coverts chestnut with narrow black shaft-lines 

 Avhich broaden near ends of feathers. 



Dimensions. — Wing 104, tail 5S, culmen 16, tarsus 29. 



While in the Valley of Comitan, Chiapas, we were told of the 

 presence there of a species of Bob-white, but saw none during our 

 short stay. At Nenton, in Guatemala, a locality half a day's 

 journey beyond the Valley, we secured a single adult female which 

 is very different from the female of any other known bird of this 

 genus, and as none of the various species taken in the surround- 

 ing region show a gradation toward it, I feel justified in giving the 

 new bird specific rank. 



Colinus graysoni nigripectus, new subspecies. Puebla 



Bob-white. 



Type, No. 155522, U. S. Nat. Museum, Dept. Agric. coll., $ , Atlixco, 

 Puebla, Mexico, August 9, 1893. Collected by E. W. Nelson (Orig. 

 No. 1460). 



Distribution. — - Plains of southern Puebla. 



Description. — Contrasted with typical C graysoni, nigripectus may be 

 distinguished by its paler shade of rufous both above and below, by the 

 greater width of the black area bordering the white of throat and bv its 

 smaller size. The black of the neck extends from the border of the 

 white throat area down over the fore part of the chest and also reaches 

 farther back along the sides of the neck. 



Dimensions. — Wing no, tail 60, culmen 16, tarsus 30. 



We found typical g/'aysoni ranging south to the northern end of 

 the Valley of Mexico. Thence southeasterly to the City of 

 Puebla none were seen, but when we reached Atlixco the present 

 subspecies was common on the cultivated plain. 



This subspecies is based upon five adult specimens. 



