Auk 
70 NELSON, Vew Birds from Mexico and Guatemala. pan 
Heleodytes capistratus nigricaudatus, new subspecies. 
BLACK-TAILED WREN. 
Type, No. 142806, U. S. Nat. Museum, Dept. Agric. coll., @, San Benito, 
Chiapas, Mexico, March 11, 1896. Collected by E. W. Nelson and E. A. 
Goldman (Orig. No. 3648). 
Distribution.— Pacific coast of Chiapas, near Tapachula, and thence into 
adjacent parts of Guatemala. 
fleleodytes capistratus nigricaudatus is very much like H. capzs- 
tratus castaneus Ridgw. in the uniform chestnut coloration of the 
back, and, indeed, in other respects except the color of the tail. 
In the present form the two central rectrices are black, or blackish 
brown, with one and sometimes two subterminal white or whitish 
bars, the feathers being tipped with a narrow grayish or blackish 
brown border and lacking the several brownish bars which are 
conspicuously present in birds from Costa Rica, Nicaragua and 
Guatemala. In the eleven specimens of zigricaudatus before me 
this character is so constant that, despite the close resemblance 
of this form to castaneus in other particulars I feel justified in 
recognizing it as a geographical race occupying the extreme north- 
western border of the range of the species along the Pacific coast. 
Salpinctes obsoletus neglectus, new subspecies. CHANCOL 
Rock WREN. 
Type, No. 142866, U.S. Nat. Museum, Dept. Agric. coll., , Hacienda 
Chancol, Guatemala, January.3, 1896. Collected by E. W. Nelson and E. 
A. Goldman (Orig. No. 3330). 
Distribution.— Highlands of western Guatemala and probably of central 
Chiapas. 
Description.— Salpinctes o. neglectus may be distinguished from the 
Rock Wrens of the western United States and the highlands of northern 
and central Mexico by its clearer or more ashy gray color, the intensity of 
the black shaft-lines and white tips of the feathers on the dorsal surface, 
the black and white markings being quite clearly and sharply defined. The 
ear-coverts are dark brown, the cheeks are white with blackish brown 
mottling, and the sides of the neck are brown, variegated with white. 
The rump is a little deeper fulvous than in odsoletus from the Mexican 
highlands. The tail is also darker than in that bird. The throat is 
whitish, the breast and sides are mottled with distinct black spots, and the 
flanks are dull fulvous. Size about the same as typical obsoletus. 
