Ridgway New American Birds. 107 



Stelgidopteryx salvini, new species. 



Similar to S. serripennis but pileum distinctly darker than back, ter- 

 tials conspicuously margined with white (except in worn plumage), and 

 chin and upper throat pale cinnamon or cinnamon-buff. 



Southwestern Mexico (State of Jalisco) to Chiriqui. 



Type, No. 30,716, Coll. U. S. Nat. Mus., adult male, Duenas, Guate 

 mala, October 17, 1859; O. Salvin. 



Vireosylva gilva brewsteri, new subspecies. 



Similar to V. g. swainsonii but larger (adult male averaging: wing, 73; 

 tail, 52.5; exposed culmen, 11.2; adult female, wing, 71.7; tail, 50.3; 

 exposed culmen, 10.8 mm.). 



Mountains of Chihuahua, northwestern Mexico. 



Type, No. 21,811, Coll. William Brewster, adult male, Bravo, Chi 

 huahua, July 24, 1888; M. Abbott Frazar. 



Vireosylva Joseph costaricensis, new subspecies. 



Similar to V. j. josephce but pileum paler sooty, wing shorter and tail 

 longer. 



Highlands of Costa Rica. 



Type, No. 41,269, Coll. U. S. Nat. Mus., San Jos6, Costa Rica; J. Car- 

 miol. 



Vireo huttoni cognatus, new subspecies. 



Similar to V, h. stephensi but underparts without yellowish tinge, the 

 chest not shaded with olive-buff; rump and upper tail-coverts less 

 strongly olive-green. 



Cape district of Lower California. 



Type, No. 15,527, Coll. William Brewster, adult male, Sierra de la 

 Laguna, Lower California, May 5, 1887; M. Abbott Frazar. 



Vireo huttoni mexicanus, new subspecies. 



Similar in coloration to V. h. huttoni but size decidedly larger (adult 

 male averaging: wing, 67.3; tail, 51.9; adult female, wing, 65.4; tail, 

 51.2 mm.). 



Southern portion of Mexican plateau to highlands of Guatemala. 



Type, No. 143,442, Coll. U. S. Nat. Mus. (Biological Survey Collection), 

 adult male, Mt. Orizaba, Puebla, April 26, 1893; E. W. Nelson. 



