°i89^^] Ohkkiiolser, Description of a Nexv Atnazilia. 33 



Description. — Tjpe, male adult, No. 134941, U. S. Nat. Mu.s. ; Beeville, 

 Texas, May 29, 1894; F. 15. Armstrong. — Upper parts bronze green, the 

 cervix less golden ; tips of coronal feathers broadly slate color, giving to 

 the head a dingy appearance; feathers of the superior tail-coverts edged 

 with chestnut. Wings dull, dark, metallic purple; tectrices, except the 

 primary coverts, bronze green like the back. Tail chestnut, the two cen- 

 tral rectrices greenish bronze, all the others externally margined, and the 

 outer ones narrowly, the inner broadly, tipped with the same color. 

 Throat and breast glittering green ; central portion of abdomen ochraceous 

 buff, lower tail-coverts somewhat darker ; two pure white down tufts, one 

 on either side of anal region, these almost wholly concealed by the con- 

 tour feathers; flanks pale cinnamon rufous, mixed, especially on the 

 anterior portions, with bronze green; under wing-coverts and axillars 

 greenish bronze; edge of wing light cinnamon rufous. 



From Amazilia cerviniventris this new subspecies may be readily 

 discriminated by the much Ughter color of the posterior lower 

 parts, in this respect there being more difference than exists 

 between true Amazilia cervifiiventris and A. yucatanensis. Among 

 the birds from Texas (16 in number) this character is quite 

 constant. The upper parts are appreciably more golden in hue, 

 although this can be regarded as only an average distinction, for 

 some examples of cerviimientris are fully as golden bronze above 

 as is chalconota. There seems to be little if any difference in size. 



A specimen from Hidalgo, Tamaulipas, Mexico, on the Rio 

 Grande, has the abdomen more deeply colored than the Texas 

 birds ; in fact, almost as dark as the palest examples of cervijii- 

 vejitris. It is thus rather intermediate between chalconota and 

 cerviniventris., but is apparently nearer the former. A specimen 

 from ' Mexico ' (No. 38635, Am. Mus. Nat. Hist.) is quite indis- 

 tinguishable from some examples of chalconota., and, although no 

 date is attached, may very safely be considered a migrant and 

 referred to this form. 



Among the Texas specimens there is evident considerable indi- 

 vidual variation, part of which is undoubtedly due to age. Some 

 have the posterior lower parts much lighter than others, the type 

 representing in this respect about the average. But even the 

 darkest specimens are easil)^ separable from typical cerviniventris. 

 The extent of the bronze on the tail-feathers is quite variable. 

 In one bird (No. 142258, U. S. Nat. Mus.) this color is much 



