Vol. XIV 
(ena: eee To Pe RGR bs ’ 7 
ear NELSON, New Birds from Mexico and Guatemala. 59 
I take, pleasure in dedicating this form to Mr. Chas. W. 
Richmond, Assistant Curator of Birds in the National Museum, 
who obtained specimens of it in Nicaragua. 
Agelaius gubernator californicus, new subspecies. Catr- 
FORNIA BICOLORED BLACKBIRD. 
Type, No. 74278, U. S. Nat. Museum, ? ad., Stockton, California, April 
17, 1878. Collected by L. Belding. 
Distribution.— Coast region and valleys of California and Oregon north 
to the Columbia River. 
Description of type, in breeding plumage.— The crown and back of neck 
and shoulders streaked with the grayish and buffy edgings to feathers ; 
primaries, secondaries, tertiaries and wing-coverts edged with whitish ; 
chin and throat fulvous with black shaft-streaks on most of feathers ; entire 
breast and sides of neck streaked coarsely with the fulvous whitish borders 
to feathers; general color of rest of plumage dull blackish. The males 
of the two forms agree in coloration. The type measures: Wing 108, tail 
75, culmen 19, tarsus 28. 
In comparing specimens of this species from the table-lands of 
Mexico with those from California certain differences are found 
which warrant the naming of a geographical race. As A. guber- 
nator was described from the table-lands of Mexico it follows 
that the Californian bird is the new one. 
The breeding females of typical gwbernator from the plains of 
Puebla lack nearly all of the light streaking on the entire upper 
surface, including the wings, and the light streaks are less 
marked on the lower surface. 
Among other differences from true gubernator are the notably 
smaller size and slenderer bills of the northern birds, as shown 
by the accompanying tables of measurements. The specimens 
from Atlixco and Patzcuaro are in worn or imperfect plumage so 
that the dimensions of their wings and tails fall below the normal. 
The Californian specimens measured were all in good plumage. 
True gubernator ranges over all of the southern end of the 
Mexican table-land north of Oaxaca, and specimens have been 
examined from Lagos in Jalisco, Guanajuato, Lake Patzcuaro in 
Michoacan, the Valley of Mexico, the Plains of Puebla, and 
Orizaba in Vera Cruz. Between the present ranges of these two 
