TYBANNID^ — TYBA NNINJ^ : TYRANT FL YCA TCHEBS. 431 
flycatcher of aggressive appearance, long known in Mexico, recently ascertained to occur on 
the Lower liio Grande in Texas. 
MYIODYNAS'TES. (Gr. fxvia, muia, a fly ; dvvaa-Trjs, 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 broader than high at the nostrils, lateral outlines slightly convex, 
culm en 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. Feet 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. 
M. luteiven'tris. (Lat. liiteus, yellow, ventris, of venter, the belly.) Sulphur-bellied 
Striped Flycatcher. 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, sulplmr-yellow, 
fading to white on the throat ; everywhere, excepting on middle of belly and crissum, heavily 
streaked with blackish, these dark stripes suff'used and 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. 
MIL'VULUS. (Lat. milvulus, diminutive of milviis, a kite.) Sv^allow-tailed Fly- 
catchers. Tail in the adult deeply forficate, 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 tyrannus 366 
One primary emarginate. Crown-spot flaming, in ashy cap forficatus 367 
M. tyran'nus. (Lat. tijrannus, a tyrant.) Fork-tailed Flycatcher. 9 , 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 
U. S. (Louisiana, Kentucky, New Jersey !) 
M. forfica'tus. (Lat. forficatus, forked like forfer, a pair of scissors. Fig. 282.) Swal- 
low-tailed Flycatcher. Scissor-tail. ^9, 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 whitish 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. 9 averaging 
