Mr. Swainson on several new groups in Ornithologt/. 165 



hibits an osculant form between the present CampephdgcB^ and 

 the aberrant forms of the subfamily Tyrannina, Three species, 

 all undescribed, are in my possession. 



PITANGUS, 



Rostrum magnum. 



Alee mediocres, remigum pogoniis internis immarginaihy apice 



obtusis, 

 Cauda cEqualis. 

 Pedes subbrevesy fortes. 



Bill large. Wings moderate, the quills entire, and their ex- 

 tremities obtuse. Tail even. Feet rather short, robust. 

 Type. Tyrannus sulphuraius. Vieill. Ois. de L*Am. pi. 47. 



TYRANNUS. 



Rostrum subbreve^ forte ^ depressum. 



Aloe elongatce, remigum pogoniis internis abrupt e entarginatis, 



Cauda mediocrisyfere cequalis. 



Pedes breves. 



Bill rather short, strong, depressed. Wings lengthened; the 

 quills internally abruptly emarginate. Tail moderate, even, or 

 slightly forked. 



Type. Tyrannus intrepidus, Vieillot — Wilson, 2, pi. 13. f. 1. 



Sub-family Tyrannina, 



MILVULUS. 



Rostrum breve ; culmine depresso^ recto. 



AloB elongatcBy remigum pogoniis internis ad apice m emarginatisy 



vel attenuatis, 

 Cauda longissima, furcata. 

 Pedes breves. 



