62 NeELson, New Birds from Mexico and Guatemala. a 
Diéistribution.— Highlands of central Chiapas, Mexico. 
Description of type-— Top and sides of head and neck dull ashy gray ; 
back dull rufous with exposed borders of secondaries and tertials a 
brighter shade of same; rump and upper tail-coverts olive brown; chin, 
throat, middle of breast and abdomen dull white; sides of breast, flanks 
and under tail-coverts dull, olive-shaded buffy; over two-thirds of outer 
web and about one-half of inner web of outer tail-feather white; about 
one-third of inner web of second tail-feather white; general color of 
undescribed parts of wings and tail light clove brown; lores blackish. 
Measurements: Wing 77, tail 67, culmen15, tarsus 23. 
The females are smaller and rather duller colored. In winter 
dress the rufous of the back becomes dark, dull chestnut. In the 
large size of the beak as well as in other proportions these birds 
are similar to ad/ticola, but the specimens before me show no 
intergradation in coloration between the two birds. 
An examination of a large series of Mexican and Guatemalan 
Juncos, including specimens of PAA@onotus and alticola from the 
vicinity of the type localities, reveals the interesting fact that a 
hitherto undescribed species inhabits the highlands of central 
Chiapas. Sixteen specimens of this bird are now before me. 
Its range lies adjacent to that of a@/ticola but is wholly cut off 
from that of pheonotus by the low country at the Isthmus of 
Tehuantepec. Nearly all of the adult specimens of /dlvescens at 
hand are in worn summer plumage or just entering the fall molt. 
The type, however, is in fairly well preserved summer plumage. 
« 
Peuczea ruficeps fusca, new subspecies, BROWN SPARROW. 
Type, No. 135909, U. S. Nat. Museum, Dept. Agric. coll., 2, from 
Etzatlan, Jalisco, Mexico, June 18, 1892. Collected by E. W. Nelson 
(Orig. No. 185). 
Distribution.— Vhe southwestern part of the Mexican table-land region, 
and bordering mountains, in the States of Michoacan and Jalisco. Its 
range to the north merges into that of scoftz, and to the east and south- 
east into that of doucard:. 
Description.—In the present race the most obvious character lies in 
the intensity of the browns on the entire dorsal surface and the scantiness 
of ashy borders to the feathers, thus giving a deep, warm brown color to 
this area. The dark rufous of the pileum shades gradually into the van- 
dyke brown of the back. The ashy borders of the dorsal feathers, so far 
