TYBANNID^ — TYBANNIN.E : TYRANT FLYCATCHERS. 431 



flycatcher of aggressive appearance, long known in Mexico, recently ascertained to occur on 

 the Lower Rio Grande in Texas. 

 117. MYIODYNAS'TES. (Gr. ^vta, muia, a fly; bvva<TTi}s, dunastes, a ruler.) Striped Fly- 

 catchers. Related to Myiarchus; tail extensively chestnut, as in that genus, but no chestnut 

 on wings. No primaries emarginate. A yellow crown-spot. Bill shorter than head, as long 

 as tarsus, very turgid, much hroader than high at the nostrils, lateral outlines slightly convex, 

 culraen nearly straight to the little hooked tip, gonys long, ascending. Rictus moderately 

 bristled. Wings long and pointed ; 3d quill slightly longer than 2d, 4th little shorter, 5tk 

 much shorter, 1st between 5th and 6th. Tail shorter than wings, nearly even. Teet very 

 small, relatively as weak as in Contopus; tarsus rather shorter than middle toe and claw. 

 Several species of Mexico and tropical Am. flycatchers, with crown-spot, rufous tail, and the 

 whole plumage streaked. 



365. M. luteiven'tris. (Lat. luteus, yellow, ventris, of venter, the belly.) Sulphur-bellied 

 Striped Flycatchbh. Entire upper parts, including the head, streaked ; the feathers with 

 broadly dusky centres and olive-brown borders, finally edged slightly with yellowish-brown. A 

 yellow crown-spot, concealed as in the king-bird. Tail and its upper coverts rich chestnut, all 

 the feathers with blackish shaft stripes — on the middle feathers about half the width of either 

 web, on the outer narrowed to the shaft itself and a slightly clubbed end ; from below, shafts 

 of the feathers white except at ends. Wings blackish, the median and greater coverts and 

 inner quills, both externally and internally, conspicuously edged with yellowish-white ; some 

 rufous edgings also on lesser coverts. Under parts, including lining of wings, sulphur-yellow, 

 fading to white on the throat ; everywhere, excepting on middle of belly and crissum, heavily 

 streaked with blackish, these dark stripes suffused aud blended on the throat, particularly 

 along its sides. Lores and auriculars dusky; forehead and streak over eye whitish. Bill 

 blackish, pale at base below. Wing 4.40; tail 3.40; bill and tarsus 0.75; middle toe and 

 claw rather more. Central Am. and Mexico to Arizona, where common, and breeding in 

 southern parts of the territory. 



118. MIL'VULUS. (Lat. mihulus, diminutive of milvus, a kite.) Swallow-tailed Fly- 

 catchers. Tail in the adult deeply foi-ficate, about twice as long as the wing. Outer primary 

 or primaries abruptly attenuate, and other characters as in Tyrannus proper (beyond). A 

 yellow or flaming crown-spot. 



Analysis of Species. 



Three or four primaries emarginate. Crown-spot yellow, in black cap tyrnnnus 36(> 



One primary emarginate. Crown-spot flaming, in ashy cap ... . . . forficatus 367 



366. M. tyran'nus. (Lat. tyrannus, a tyrant.) Fork-tailed Flycatcher. ^ ? , adult : 

 Outer 3 or 4 primaries emarginate. Crown-patch yellow. Above, clear ash ; below, white ; 

 top and sides of head black ; tail black, the outer feather white on outer web for about half its 

 length ; wings dusky, unmarked. Sexes alike. Young similar, but primaries not emarginate, 

 nor tail lengthened ; no crown-spot ; wing- and tail-coverts edged with brown. Wing 4.50 ; 

 tail up to a foot long, forked 6-8 inches. A beautiful bird of tropical Am., accidental in the 

 TI. S. (Louisiana, Kentucky, New Jersey !) 



367. M. forfica'tus. (Lat. forficatus, forked like forfex, a pair of scissors. Fig. 282.) Swal- 

 lqw-tailbd Flycatcher. Scissor-tail. (J?, adult: First primary alone emargi- 

 nate (fig. 279, a). Crown patch orange or scarlet. General color hoary-ash, paler or white 

 below; sides at insertion of wings scarlet or bloody-red, and other parts of the body variously 

 tinged with the same, or a paler salmon-red. Wings blackish, with whitiish edgings. Tail 

 black, but several of the long feathers extensively white or rosy ; these are narrow and linear, 

 sometimes widening somewhat in spoon-shape. Wing 4.50-5.00 : extent of wings 14.50- 

 15.50 ; tail up to a foot long, usually 8.00-10.00 inches, forked 5.00-6.00. ? averaging 



