VOL. XVIII, PP. 211-214 OCTOBER 17, 1905 



PROCEEDINGS 



OF THE 



BIOLOGICAL SOCIETY OF WASHINGTON 



NEW GENERA OF TYEANNIDJ5 AND TURDID.E, AND 

 NEW FORMS OF TANAGRIDJS AND TURDID.E. 



BY EGBERT RIDGWAY. 



By permission of the Secretary of the Smithsonian Institution. 



Platytriccus gen. nov. (Tyrannidae.) 



Similar to Platyrinchus Desmarest * but tail relatively much shorter (but 

 little more than half as long as wing), wing relatively shorter and much 

 more rounded, the longest primaries exceeding distal secondaries by not 

 more (usually much less) than half the length of tarsus, and by less than 

 one-third the length of tail, the tenth (outermost) primary not longer than 

 third (usually shorter than first) ; tarsus nearly to quite one-third as long 

 as wing, much longer than middle toe with claw, nearly to quite twice as 

 long as exposed culmen ; feathers of chin without bristly points. 



Type , Platyrhynchus cancroma Sclater. 



(irXarfa, flat, wide, broad, and rpticKos, a small bird.) 



Species: Platytriccus cancroma (Sclater) ; Platytriccus albogularis (Sclater); 

 Platytriccus mystaceus (Vieillot) ; Platytriccus insularis (Allen) ; Platytriccus 

 bifasciatus (Allen). Probably also the following, which, however, I have 

 not seen : Platyrhynchus senex Sclater and Salvin ; Platyrhynchus griseiceps 

 Sal vin; Platyrhynchus flavigularis Sclater, and Platyrhynchus saturatus Salvin 

 and Godman. 



*Platyrinchus Desmarest, Hist. Nat. Tangaras, Manakins, et Todiers, 1805, livr. 4, text to 

 pi. 72. (Type Todus platyrhynchos Gmelin). Platyrhynchos (emendation) Vieillot, Analyse, 

 1816, 39. Platyrhynchus (emendation) Swaiiison, Zool. Illustr., ser. 4, i, 1820. pi. VZ.Platy- 

 rhyncus Descourtilz, Orn. Brs., 1856. 



Monotypic, the only known species being Platyrinchus platyrhynchos (Gmelin). 

 40 PROC. BIOL. Soc. WASH., VOL. XVIII, 1905. (211) 



