74 Nklson, A^ew Birds fyom Mexico and Guatemala. \un 



north of the Isthmus of Panama. Unfortunately there is no 

 series of specimens at hand to determine the relationship between 

 the birds of Costa Rica and those of South America. Leaving 

 birds from the last two regions out of the question, we have in 

 Guatemala and Chiapas a bird similar in general style and mark- 

 ing to the Costa Rican ones, but readily separable from them, 

 which I recognize as a geographical race of South American 

 leucophrys. These birds are found in suitable places from Guate- 

 mala to the Isthmus of Tehuantepec. The low country of the 

 Isthmus forms an abrupt cut-off, and beyond that, when the 

 southern end of the Sierra Madre is reached, we find a very 

 distinct bird which occurs along both coasts and which I have 

 recognized as specifically distinct from the others. 



The series of eighteen specimens at hand from the two sides of 

 the Isthmus of Tehuantepec, Chiapas and Oaxaca, show no signs 

 of approach to one another, and the young birds in their first 

 plumages are also readily distinguishable. 



(.([ Henicorhina leucophrys capitalis, new subspecies. Grav- 

 CROWNED Wood Wren, 



Type, No. 143018, U. S. Nat. Museum, Dept. Agric. coll., $ , Pinabete, 

 Chiapas, Mexico, February 8, 1896. Collected by E. W. Nelson and E. A. 

 Goldman (Orig. No. 3439). 



DistributioH. — Heavily wooded mountain slopes in the ' tierra templada ' 

 on both sides of Chiapas and thence into adjacent parts of Guatemala. 



Deacriptioti. — A broad band of dark gray extends from the base of the 

 upper mandible back along the top of the head to the fore part of the 

 shoulder and is bordered on each side by a narrower dark line which is 

 black or blackish. The sides of the head and neck as well as the lower 

 parts are very similar to the same parts in mexicana. The back and rump 

 are dark rufous in strong contrast to the color on the top of the head and 

 neck, the line ot demarcation being very well defined. 



Specimens from the Volcan de Fuego, in Guatemala, belong to 

 this race although inclining somewhat toward the birds of Costa 

 Rica. The latter, however, are easily distinguished from capitalis 

 by their uniformly dark color on the top of the head and neck, and 

 probably represent another race separable from true leucophrys. 



