256 NELSON, Mew North American Birds. Re 
tablelands farther south and, as might be expected, indicates this 
difference in environment by its paler colors. The birds of south- 
ern Arizona are typical of this pale form. It is named for Dr. 
Edgar A. Mearns, U. S. A., in recognition of the great amount 
of zodlogical work he has done in the region which it inhabits. 
Amazona oratrix tresmariz, subsp. nov. TrrEs Martas 
PARROT. 
Type, No. 156735, d ad., U. S. Nat. Mus., Biological Survey Collection. 
Maria Madre Island, Tres Marias group, Western Mexico, May 4, 1897, 
E. W. Nelson and E, A. Goldman. 
Distrtbution.—Tres Marias Islands, western Mexico. 
Subspectfic characters—Distinguished from true A. oratrix by rather 
light, grass green back, more bluish green underparts and much greater 
extension of yellow on neck, especially on under side. 
Dimensions of type.—Wing, 230; tail, 125; culmen, 34; tarsus, 26. 
General notes.—The type of Mr. Ridgway’s A. oratrix came from 
Petapa, Oaxaca, not far from Tehuantepec City. From this point 
they range through Western Mexico at least to the State of Colima, 
and crossing the Isthmus of Tehuantepec reach Central Tamauli- 
pas in Eastern Mexico. Birds from all parts of this wide range 
are nearly uniform in color and agree in having the yellow on the 
sides of the head and under side of the neck rarely extending 
farther back than the ear-coverts and middle of the throat. In 
the Tres Marias form, the yellow on the adult birds commonly 
covers the entire head and neck and often encroaches on the 
shoulders and breast. The back of true 4. oratrix is oil green. 
Very old birds of both forms often have the yellow feathers on the 
hind neck, and sometimes on the lower neck, edged or banded 
with dark red. ‘This is much more pronounced in specimens from 
the Tres Marias than in those from the mainland. 
Momotus lessoni goldmani, subsp. nov. GoLpmMan’s Mormot. 
Type, No. 155138, ¢ ad., U. S. Nat. Mus., Biological Survey Collection. 
Motzorongo, Vera Cruz, Mexico, March 5, 1894, E. W. Nelson and E. A. 
Goldman. 
