VOL. XVI, PP. 167-170 NOVEMBER 30, 1903 



PROCEEDINGS 



OF THE 



BIOLOGICAL SOCIETY OF WASHINGTON 



DIAGNOSES OF NINE NEW FORMS OF AMERICAN 



BIRDS. 



v 



BY ROBERT RIDGWAY. 



[By permission of the Secretary of the Smithsonian Institution.] 



The following new forms are included in Part III of "Birds 

 of North and Middle America" and are additional to those al 

 ready published in these "Proceedings," pages 105 to 111, Sep 

 tember 30, 1903. 



Thryophilus pleurostictus ravus, new subspecies. 



Similar to T. p. pleurostictus but smaller, color of back, etc., m9re ru- 

 fescent, secondaries less distinctly barred, and median underparts more 

 broadly white. 



Western Nicaragua; western Costa Rica? 



Type, No. 89,701, Coll. U. S. Nat. Mus., adult male; San Juan del Sur, 

 Nicaragua, January 17, 1883; C. C. Nutting. 



Thryophilus modestus pullus, new subspecies. 



Similar to T. m. modestus but darker and browner. 

 State of Chiapas, southern Mexico; Guatemala. 



43-PROC. BIOL. Soc. WASH. VOL. XVI, 1903. (167) 



