DESCRIPTIONS OF TWO NEW FORMS OF BASILEUTERUS RUFI- 
FRONS, FROM MEXICO. 
BY 
Robert Ridgway. 
Curator of the Department of Birds. 
1. Basileuterus rufifrons jouyi, subsp. nov. 
Subsp. Char. : Differing from true B. rufifrons in grayish-brown in- 
stead of olive-green color of the upper parts, only the edges of theremiges 
and rectrices inclining to olive-green; whiter under parts, the median 
portion of breast and belly being quite white, the yellow sharply re- 
stricted to throat and chest, the sides of the breast nearly pure ash- 
gray; bill smaller, but other dimensions not appreciably different. 
Habitat.-Northeastern Mexico (type, No. 124912, U. S. National 
Museum, $ ad., Hacienda Angostura, San Luis Potosi, December 8,1891; 
P. L. Jouy. * 
An adult female (No. 124913), collected at the same time and place, 
is essentially identical with the male. 
2. Basileuterus rufifrons dugesi, subsp. nov. 
Subsp. Char. : Similar to B. rufifrons jouyi, but browner above, with 
pileum and ear-coverts decidedly lighter chestnut or rufous. 
Habitat.-Western Mexico (type, No. 105263, U. S. National Mu- 
seum, $ ad., Guanajuato, Mexico; Prof. A. Duges). 
The six adult examples of true B. rufifrons with which the above- 
mentioned supposedly new forms have been compared, are all from south- 
eastern Mexico (Mirador and Xalapa, State of VeraCruz, andGuichi- 
covi, State of Oaxaca). They all agree in the distinctly olive-green 
colorof the upper parts (only the hind neck having a slight grayish tinge), 
and in having the median under parts more or less tinged with yellow 
on a pale buff or buffy white ground, the sides of the breast being olive 
or grayish brown instead of nearly clear ash-gray. 
An example from the Sierra Madre near Mazatlan (No. 34018, 
December, 1861, A. Grayson), agrees closely in coloration with the type 
of B. rufifrons dugesi, but, owing probably to fresh plumage, is a little 
browner above. 
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Proceedings National Museum, Vol. XV-No. 895.