44 Nelson, Nciv Birds from Mexico and Guatemala. j " 



Description of type. — Top of head and nape, including crest, black. The 

 white cheek stripe extending from below eye backward along side of gular 

 black patch, and the white superciliary line, so prominent in the forms of 

 D. niar.rourtis, are very indistinct in this bird. The white borders to the 

 feathers also so conspicuous on the back of the neck in that species are 

 absent in D. oaxaccB. The feathers of neck, below the black throat patch, 

 and on sides of breast are mostly dark chestnut with very narrow ashy 

 borders along their sides, thus producing an almost uniformly chestnut 

 area. The entire bird is darker than macrourus and is characterized b}- a 

 suppression of the lighter markings seen in that species. 



Dendrortyx macrourus griseipectus, new .subspecies. 

 Gray-breasted Woodgrouse. 



Type, No. 155560, U. S. Nat. Museum, Dept! Agric. coll., $ , Iluitzilac, 

 Morelos, Mexico, Dec. 30, 1892. Collected b}^ E. W. Nelson (Orig. No. 

 628). 



Distribution. — Heavy oak forest on the Pacific slope of the Cordillera, 

 in the States of Morelos and Mexico. 



Description. — Basal half or two thirds of breast feathers with narrow 

 rufous shaft-streaks almost entirely concealed by broad, dingy gray borders 

 of overlapping feathers ; general color of breast nearly uniform dingy 

 gray; back, rump, wings and flanks darker and more olive than in mac- 

 rourus; flanks with very indistinct, narrow shaft-lines of rufous; size of 

 macrourus. 



The type of Dendrortyx macrourus was described and figured in 

 Jardine and Selby's ' Illustrated Ornithology' (text to plates 38 and 

 49) and its range given as ' Mexico '. The description given in 

 the work quoted applies most closely to birds from the mountains 

 about the Valley of Mexico. 



The Tetrao marmorata of La Llave, from the mountains about 

 the same Valley, is undoubtedly a pure synonym of macrourus. 

 Taking birds from these high, pine and fir clad mountains as 

 typical representatives of the species, specimens from other parts 

 of southern Mexico show variations worthy of recognition as 

 geographical races. 



Dendrortyx macrourus striatus, new subspecies. Guerrero 



Woodgrouse. 



Type, No. 155567, U. S. Nat. Museum, Dept. Agric. coll., $, mountains 

 near Chilpancingo, Guerrero, Mexico, Dec. 24, 1S94. Collected bv E. W. 

 Nelson and E. A. Goldman (Orig. No. 2436). 



/^ 



