Vol. XVIII, pp. 207-210 September 2, 1905 



PROCEEDINGS 



OF THE 



BIOLOGICAL SOCIETY OF WASHINGTON 



DESCRIPTIONS OF SOME NEW OENERA OF TYRANNI- 

 D.E, PIPRID.E, AND COTINGIDi?C. 



BY ROBERT RIDGWAY. 



By permission of the Secretary of the Smithsonian Institution. 



Aphanotriccus gen. nov. [Tryamiidx.) 

 Similar to Mi/iobhis Gray but outermost primaries longer (the tenth equal 

 to first instead of much shorter than secondaries, the ninth not shorter than 

 fifth), rictal bristles weaker (not reaching to tip of bill), tail much longer 

 than distance from bend of wing to end of distal secondaries, and without 

 yellow on crown nor rump. 



Type, Myiobius capitulis Salvin = Aphanotriccus capitalis. 

 {'A<pavris, unseen, obscure; tp'lkko^, a small bird.) 



Terenotriccus gen. nov. [Tyrannkhv) 



In form somewhat like Myiobius Gray, but second phalanx of middle 

 toe partly adherent to outer toe, lateral toes relatively much shorter, tail 

 shorter than distance from bend of wing to end of distal secondaries, and 

 style of coloration very diflferent (under parts uniform cinnamon-bufF, tail 

 rufous-bufl", and no yellow on rump nor crown.) 



T'ype, Myiobius fulvigularis Salvin and Godman. 



{Tipevos, soft, delicate ; rpUKos, a small bird.) 



Species: Terenotriccus fulvigularis (Salvin and Godman), Terenotriccus 

 erythrurus (Cabanis). 



Myiotriccus gen. nov. {Tryannidw.) 



Similar to Aphanotriccus in those structural characters which separate 

 the latter from Myiobius, but outermost primaries longer (tenth equal to 

 second or third, ninth longer than fifth or sixth), tail much shorter than 

 wing to end of distal secondaries, a yellow spot on crown and rump (as in 

 Myiobius), and tail at least partly rufous. 



Type, Tyrannuln phcenicura Sclater. 



{yivla, a fly ; tpIkkos, a small bird.) 



Species: Myiotriccus ornatus (Lafresnaye), Myiotriccus stellatus (Cabanis), 

 Myiotriccus phmiicurtts (Sclater), Myiotriccus aureiventris (Sclater). 



39— Proc. Biol. Soc. Wash., Vol. XVIII, 1905. (207) 



