Vol. XVII 
1900 
NELSON, Wew North American Birds. 261 
General notes.—It is possible that the present bird may be found 
to be a subspecies of A. macromystax but this appears rather un- 
likely considering the typical character of specimens of the latter 
taken on the border of the range of A. caxace. 
Antrostomus chiapensis, sp. nov. CHIAPAS WHIPPOORWILL. 
Type, No. 154737, & ad. U. S. Nat. Mus., Biological Survey Collection. 
Valley of Comitan, Chiapas, Mexico, December 11, 1895, E. W. Nelson and 
E. A. Goldman. 
Distribution—Known only from type locality near border of Guate- 
mala. . 
Specific characters—Darker even than A. salvint; back and upper sur- 
face of wings spotted and barred with rufous brown; under parts blackish 
coarsely marked with dull buffy; under tail-coverts not barred. 
Description of tyfe—Crown with broad median streak of black with a 
few oval rufous brown spots along borders; sides of crown rather coarsely 
mottled with black, gray and brown; foreback black obscurely barred with 
dull rufous brown; rest of back, rump and upper tail-coverts black with 
transverse spots of rufous brown on edges of feathers, most heavily 
marked on coverts; scapulars black with large spots of rusty buff along 
borders; upper surface of wings and outer edges of primaries distinctly 
spotted with a deeper shade of same; upper surface of tail black rather 
finely mottled with rusty and dark grayish forming indistinct V-shaped 
bands ; sides of head blackish mixed with dark golden buffy; chin and 
throat black irregularly barred with dingy rusty and rusty whitish, suc- 
ceeded by a narrow white collar; rest of underside of body black, coarsely 
but obscurely barred with grayish and rusty brown on forebreast; coarsely 
spotted with pale dingy, rusty white on rest of breast and sides, and 
broadly but obscurely barred with dark, dingy buff; under tail-coverts 
dark buff with hidden shaft bands of black; inside of inner webs of pri- 
maries almost uniform black with only slight traces of dark rusty spots; 
white on outer ends of tail feathers about as in A. voctferus. 
Dimensions of tyfe.—Wing, 169; tail, 127; culmen, 14; tarsus, 18. 
General notes.—The only specimen taken of this well marked 
species was secured in the border of the mixed oak and pine forest 
on the highlands of Chiapas near the Guatemalan line. 
