vol. xxviiii 



1911 J Phillips, Birds of Tamaalipas, Mexico. 85 



Dendroica aestiva ineditus subsp. nov. 



14, both sexes: Matamoros, Aug. 15-Sept. 3. 



Type from Matamoros, Tamaulipas, Mexico; No. 49970, Mus. Comp. 

 Zool. Adult d", collected Aug. 19, 1908, by F. B. Armstrong. 



Characters. — Most nearly like D. as,, dugesi Coale, but slightly smaller, 

 and the female very different in color, being bright yellow below, and dull 

 greenish yellow above instead of grayish. Also somewhat similar to 

 D. ce. sonorana Brewster in general coloration of the male, but much 

 larger, and the female more brightly colored — yellower below and more 

 greenish above. 



This form, which probably occupies the whole coast region of northern 

 Tamaulipas up to the Rio Grande .Valley of Texas is strikingly different 

 from the other geographical races of D. cestiva. It is at once distinguished 

 from D. cestiva aestiva by larger size, duller and more yellowish coloration, 

 with the crown of the male always dull yellow and the back always un- 

 striped. It is larger than D. ce. sonorana, of western Mexico, and slightly 

 different in color, especially the female. It is only slightly smaller than 

 D. ce. dugesi, which form it also most nearly resembles in coloration, the 

 males of the two being very nearly alike. The female, however, is wholly 

 different from the female of D. ce. dugesi in color, being hardly distinguish- 

 able in this respect from the female of D. cestiva cestiva, from which its 

 greater size separates it at once. 



Dendroica coronata {Linn.). — 12, both sexes: Matamoros, Nov. 10- 

 Dec. 5; Altaroira, Dec. 12-15; Galindo, March 15-23. 



Dendroica auduboni auduboni (Townsend). — 9, both sexes: Mata- 

 moros, Dec. 1; San Fernando, Oct. 22; Galindo, March 14-23. 



Dendroica townsendi (Townsend). — 2, both sexes, Montelunga 

 Oct. 10 and April 30. 



