Vol. XXII, pp. 49-50 April 17, 1909 



PROCEEDINGS 



OF THE 



BIOLOGICAL SOCIETY OF WASHINGTON 



A NEW THRUSH FROM MEXICO. 



L I B ' 



BY E. W. NELSON. \'^- 



Catharus mexicanus is one of the rarest of Mexican birds in 

 collections and until recently was unknown north of Jalapa, 

 Veracruz, the type locality. It was therefore with much interest 

 that I had the opportunity a short time since to examine a fine 

 specimen collected by Austin Paul Smith in the Sierra Madrc of 

 Tamaulipas, far north of any previous record. The mountains 

 of Tamaulipas are in a much less humid region than the type 

 locality of mexicanus and Mr. Smith's specimen differed so 

 much from a topotype of that form collected by Mr. Frank 

 Chapman that I suspected the Tamaulipas bird represented an 

 undescribed subspecies. Recently Mr. Outram Bangs has re- 

 ceived two additional specimens from Tamaulipas, one from 

 Galindo and the other from Rampahuala, which prove the 

 validity of the new form. I take pleasure in naming it in 

 honor of Mr. Austin Paul Smith who has generously presented 

 the type to the Biological Survey Collection. 



Catharus mexicanus stnithi subsp. nov. 



SMITH NIGHTINGALE THRUSH. 



Ty])r from Carricitos (altitude 6,000 feet) in Sierra Madre of the East, 

 about 50 miles northwest of Victoria, Tamaulipas, IMexioo. No. 204,801 

 U. S. National Museum, Biological Survey Collection, c? adult. Col- 

 lected October 16, 1908, by Austin Paul Smith. 



Geographic distribution. — AVooded east slope (mainly in canyons) of 

 Sierra Madre of the East, in State of Tamaulipas; probably extends 

 north and south respectively into States of Nuevo Leon and San Luis 

 Potosi. 



Stibspecijic characters. — Similar to typical mexicanus from .Talapa l)nt 



black of crown clearer or less smoky ; upperparts including toji of 



wings and tail clearer green — less sntl'usi'd ^\■ith olive; underparts with a 



distinctly greenish shade on gray of breast and Hanks; upjier mandil)le 



7— Proo. Biol. Soc. W.vsh., XXII. I'.WJ. (49) 



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