86 BANGS —- NEW SANTA MARTA BIRDS eee 
paler, but a much paler and yellower bird throughout, the throat and breast 
scarcely tinged at all with ashy, the sides of head much yellower, less ashy, the 
sides of crown, bordering the yellow, semi-concealed crest, much paler —in 
M. p. accola grayish olive, in the new form grayish oil green; hind neck, back 
and rump much paler —in JZ. f. accola dull olive green, in the new form pale 
oil green with a slight grayish cast. 
Measurements. — Adult female,! type: wing, 70.; tail, 66.; tarsus, 18.; 
exposed culmen, 11.5 mm. Adult male, topotype, no. 5224: wing, 69.; tail, 
62.; tarsus, 18.; exposed culmen, 12. mm. Adult female, topotype, no. 6707: 
wing, 63.; tail, 57.5; tarsus, 17.; exposed culmen, Io.5 mm. 
Onychorhynchus mexicanus fraterculus subsp. nov. 
Muscivora mexicana Sc\., Allen, Bull. Amer. Mus. Nat. Hist., Vol. XIII, p. 
145. 
Type, from Santa Marta, Colombia, g adult, no. 5250, coll. of E. A. and O. 
Bangs, collected Jan. 4, 1898, by W. W. Brown, Jr. 
Salvin and Godman, in their paper on Simons’s Santa Marta 
collection, gave the presence of this bird in the region as one 
reason for thinking there was a certain Mexican element in the 
ornis of the Sierra Nevada de Santa Marta. A critical compari- 
son of a large amount of material, however, shows that the Santa 
Marta plumed tyrant bird cannot properly be referred to true 
O. mexicanus. It (the new form) is like true O. mexicanus in 
color and color pattern, but is very much smaller, with proportion- 
ally larger bill (actually, about the same width and but little 
shorter). The Santa Marta bird is evidently but a small southern 
race of O. mexicanus, as there is a gradation through Panama and 
Chiriqui. Mexican examples are always very large. Besides 
the following list of measurements, I measured and compared a 
large series of specimens in Washington, that in every way bore 
out those given below. 
\ 
1 As in most tyrant birds, the females of AZyofagis are smaller than the males. The specimen 
I select for the type of this new form is, I think, wrongly sexed, and is probably an adult male. 
