oy NELSON, Wew North American Birds. 269 
Geothlypis trichas modestus, subsp. nov. San Bras YEL- 
LOWTHROAT. 
Type, No. 157204,  ad., U. S. Nat. Mus., Biological Survey Collec- 
tion. San Blas, Territory of Tepic, Mexico, June 12, 1897, E. W. Nelson 
and E. A. Goldman. 
Distribution. — West coast of Mexico from southern Sinaloa south at 
least to Colima. 
Subspecific characters.— Smaller than typical G. ¢trichas from the 
eastern United States, with the green of back darker, more brownish 
olive and brownish flanks ; black frontlet and white border to same nearly 
“ as in G. ¢#. occtdentalis. 
Dimensions of type.— Wing, 52; tail, 49; culmen, 12; tarsus, 19. 
General notes. — This small dark form is resident in the area 
given for its range and we took young birds at San Blas in June. 
The young as well as the adults are distinguishable by their dark 
color. 
Thryothorus felix grandis, subsp. nov. MoreLos WREN. 
Type, No. 142949, @ ad., U. S. Nat. Mus., Biological Survey Collection. 
Yautepec, Morelos, Mexico, January 18, 1893, E. W. Nelson. 
Distribution. — Southwestern Puebla, Morelos and adjacent part of 
Guerrero. 
Subspectfic characters. —Much larger than the other forms of this spe- 
cies; paler than true 7. fed¢x and darker than the pale Sinaloa form. 
Dimensions of type. — Wing, 60; tail, 61; culmen, 18; tarsus, 23. 
General notes. —'These Wrens are very common in brushy places 
of the arid and semitropical country they inhabit, and like their 
near relatives are very musical. 
Harporhynchus curvirostris maculatus, subsp. nov. 
SONORA THRASHER. 
Type, No. 164734, d ad., U. S. Nat. Mus., Biological Survey Collection. 
Alamos, Sonora, Mexico, December 23, 1898, E. A. Goldman. 
Distribution. — Southern Sonora, northern Sinaloa and southwestern 
Chihuahua (on western slope). 
