Vol. XVI, pp. 167-170 November 30, 1903 



PROCEEDINGS 



OF THE 



BIOLOGICAL SOCIETY OF WASHINGTON 



DIAGNOSES OF NINE NEW FORMS OF AMERICAN 



BIRDS. 



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. pUurostictus but smaller, color of back, etc., more 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. to. modestus but darker and browner. 

 State of Chiapas, southern Mexico; Guatemala. 



43— Pnoc. Biol. Soc. Wash. Vol. XVI, 1903. (167) 



