61. MEGAEHYNCHUS. 189 



Subfamily IV. TYEANNINtE. 



The Tyrannince, or typical Tyrants, with which I conclude the 

 series of Tyrannidce, embrace most of the strongest and largest 

 members of the family. The bill is generally much more depressed 

 than in the preceding subfamily, and the gape armed with bristles. 

 The wings are more or less lengthened and formed for active flight. 

 The tarsi are mostly long and robust, though this feature varies 

 much in the different genera. 



The Tyrannince, as here arranged (though, as already stated, the 

 whole systematic order of the present family must be taken as purely 

 provisional), are distributed all over the Nearctic and Neotropical 

 llegions. Nearly all tho well-known North-American genera of 

 Tyrannidce (such as Empidonax, Contopvs, Myiarchus, and Tyran- 

 nus) belong to this section ; while others (Muscivora, Hirundinea, 

 Cnipodectes) are purely Neotropical. Blacicus and Lawrencia are 

 Antillean types of this subfamily. 



Index to the Genera. 



61. Megarhynchus, p. 189. 



62. MuscrvosA, p. 191. 



63. Hirundinea, p. 195. 



64. Cnipodectes, p. 197. 



70. Lawrencia, p. 233. 



71. Contoptjs, p. 234. 



72. Blacicus, p. 241. 



73. Myiochanes, p. 245. 



65. Myiobius, p. 198. 74. Myiarchus, p. 246. 



66. Pyrocephalus, p. 211. 75. Empidias, p. 264. 



67. Empidochanes, p. 216. 76. Empidonomus, p. 265. 



68. Mitrephanes, p. 218. 77. Tyrannus, p. 267. 



69. Emppdonax, p. 221. 78. Mtlvulus, p. 267. 



61. MEGARHYNCHUS. 



Type. 



Platyrhynclius, Temm. Tall. Meth. p. 23 (1822) M. pitangua. 



Megarhynchus, Thunb, Disq. de genere Megarhyncho * 



(1824) M. pitangua. 



Scaphorhynchus, Max. Beitr. iii. p. 982 (1831) M. pitangua. 



Megastoma, Siv. Class. B. ii. p. 225 (1837) M. pitangua. 



The large and much-flattened bill renders this genus easily 

 recognizable. The form, under various slight geographical varia- 

 tions, extends from Mexico to Paraguay. 



1. Megarhynchus pitangua. 



Tyrannus brasiliensis, Briss. Orn. ii. p. 402. 



Lanius pitangua, Linn. S. N. i. p. 136. 



Tyrannus pitangua, Sw. Quart. Journ. Sc. xx. p. 570. 



* Vide Heine, J. f. O. 1859, p. 337. 



