MILVULUS. 327 



middle toe, with claw (or else a conspicuous white cottony patch on 

 each side of rump'). 

 d^. Tail-feathers partly rufous ; lower parts uniform ashy for ante- 

 rior half (approximately), pale yellowish for posterior portion. 



(Wing- about 3.25^.50.) Myiarchus. (Page 332.) 



(P. Tail-feathers without any rufous ; lower parts not colored as in d^. 

 &, Wing at least six times as long as tarsus. (Wing about 3.00- 



4.25.) Contopus. (Page 336.) 



^. Wing not more than five times as long as tarsus. 



p. Sexes alike in coloi', the plumage without any red, and 

 destitute of streaks on lower parts. 



cf. Wing more than 3.25 Sayornis. (Page 335.) 



g". Wing less than 3.25 Empidonax. (Page 339.) 



p. Sexes very different in color, the adult male with whole 

 top of head and lower parts scarlet, the female and 

 young distinctly streaked beneath. (Wing about 



3.25.) Pyrocephalus. (Page 345.) 



6^ Bill from nostril less than half as long as tarsus, the culmen much curved, 

 &. Wing more than 3.00 ; lower parts, except throat, pure lemon-yellow ; 

 a broad white superciliary stripe ; middle of crown, in adult, with a 



concealed orange patch Myiozetetes. (Page 331.) 



&. Wing less than 2.50 ; lower parts dull whitish or yellowish white ; no 

 superciliary stripe, and top of head without concealed colored 

 patch Ornithion. (Page 345.) 



Genus MILVULUS Swainson. (Page 326, pi. XCI., fig. 8.) 



Species. 



Tail-feathers black, the outer one edged with white ; top of head deep black ; 

 axillars pure white. Adult male : Back light bluish gray ; entire lower parts 

 pure white; middle of crown with a concealed patch of bright lemon-yellow; 

 length about 12.00-14.50, wing 4.10-4.75, tail 9.00-10.00. Adult female: 

 Similar, but rather smaller, with tail shorter, and j^ellow crown-spot shorter. 

 Young : Similar to adult, but tail much shorter (sometimes scarcely forked), 

 colors duller, the wing-coverts bordered with pale rusty, and no yelloAV on 

 crown. Hab. Tropical America in general, including Lesser Antilles ; north, 

 normally, to southern Mexico, accidentally to Mississippi, Kentucky, and 

 New Jersey 442. M. tyrannus (Linn.). Fork-tailed Flycatcher. 



Tail-feathers chiefly white; top of head ash-graj^; axillars red or orange. Adidt 

 male : Above light bluish gray, the back tinged with red ; lower parts white, 

 faintly tinged with bluish gray anteriorly, the sides, flanks, and under tail- 

 coverts strongly washed with salmon-pink ; axillars and concealed- spot in 

 middle of crown scarlet; length about 12.00-15.00, wing 4.40-5.15, tail 



1 In " Contopus" {i.e., Nuttallornia) borealia. 



