Order II. PASSERES. Tribe III. Dentirostres, Family III. Muscicapidje. 



The third Subfamily, 



TYRANNINiE, or Tyrants, 



have the Bill more or less long, broad, and depressed at the base, and the sides gradually compressed to 

 the tip, which is hooked and emarginated ; the gape sometimes furnished with long and strong bristles ; 

 the Nostrils basal, with the opening small, usually rounded, and hidden by the projecting feathers and 

 bristles : the Wings more or less long, and generally pointed : the Tail moderate, and sometimes 

 emarginated : the Tarsi short, and covered with broad scales : the Toes generally rather short ; the outer 

 longer than the inner, and united at the base ; the hind toe moderate, and padded beneath : the Claws 

 rather short, and very acute. 



Machetornis.* 



Bill rather long, with the culmen sloping, and the sides much compressed to the tip, which is slightly 

 emarginated ; the lateral margins slightly curved, and the gonys long and ascending ; the gape furnished 

 with long slender bristles ; the nostrils basal and lateral ; with the opening small, rounded, and partly 

 covered by the projecting plumes. Wings long; with the first three quills graduated and pointed; the 

 fourth and fifth equal and longest. Tail moderate and rounded. Tarsi longer than the middle toe ; 

 and covered with broad transverse scales. Toes moderate ; the outer toe longer than the inner, and 

 united at its base; the hind toe long and rather strong; the claws moderate and slightly curved, 

 except that of the hind toe, which is long and strong. 



The typical species is found in Tropical America, and is mostly seen on the sandy pasture ground, upon which it 

 walks and occasionally runs, every now and then taking a short flight after such insects as have just taken wing, 

 having been disturbed on its approach. 



M. rixosa (Vieill.) — Muscicapa Joaziero Spiv, Av. Bras. t. 23. ; Tyrannus ambulans Swains. 



SCAPHORHYNCHUS Pr. MdX.f 



Bill rather long, very broad, and depressed ; with the culmen keeled, curved, and the sides gradually 

 compressed to the tip, which is hooked and emarginated ; the gonys long, rounded beneath, and 



* Originally established under the name of Chrysolophus, by Mr. Swainson, in 1837; which word, having been previously used, was 

 altered by me to the above in 1841. 



t Established by the Prince of Neuwied in 1831. Tyrannus of Vieillot (1816) and Megastoma of Mr. Swainson (1837) are 

 synonymous. 



