FALCONIDA, — CLIIL. 257 
z. Wing ratber pointed, more than 4 times length of tarsus. 
Burxo, 421. 
aw. Wing rounded, less than 4 times length of tarsus. 
ASTURINA, 422. 
ee. Tarsus about as long as tibia. 
Jj. Face without ruff; wings rounded, little longer than 
tail; tarsus scutellate in front only, rarely booted. 
ACCIPITER, 420. 
Jj. Face with a slight ruff, somewhat as in owls; wings 
very long, longer than the long tail, tarsus scutellate 
in front and behind. . . . . . . Currcus, 419. 
6b. Nostrils small, circular, with a conspicuous central bony tubercle; cut- 
ting edge of upper mandible with a strong tooth, separated from 
hooked tip of bill by a distinct notch; tarsus reticulate all around. 
GiaLennenm yy al ee FSU ee Ms FALCco, 426. 
aa. Outer toe reversible; claws all of the same length, narrowed and rounded 
on lower side; tarsus reticulate; plumage compact. (Pandionine.) 
PANDIoN, 427. 
416. ELANOIDES Gray. (Elanus; «iSos, form.) 
803. BE. forficatus (L.). Swantow-rarLep Kite. Lustrous 
black ; head, neck, lower parts, and band on rump white; young 
streaky. L. 25. W.17. T.14. Southern, N. to Penn. and Minn. 
(Lat., forfex, shears ; tail deeply forked, like shears.) 
417. BLANUS Savigny. (Lat., kite.) 
804. EH. leucurus (Vieillot). Wurre-rarLep Kite. Bluish 
gray, with white on head and tail, and black on shoulder. IL. 17. 
W.13. T.7. Tropical Am., N. to S. IIL. (Aeuxds, white ; ovpd, tail.) 
418. ICTINIA Vieillot. (ixrivos, kite.) 
805. I. mississippiensis (Wilson). Mussrssiprr Kirr. Chiefly 
lead blue, wings with chestnut. L.15. W.12. T. 64. 8. E. U.S., 
N. to Penn. and Wis. 
#19. CIRCUS Lacépéde. (kipxos, a kind of hawk.) 
806. C. hudsonius (L.). Marsa Harrier. Chiefly pale 
bluish gray; rump and under parts whitish; tail bluish, mottled 
and tipped with white, and with dark bands; 9 dusky brown. 
Ete Wiis, 7.9.) N.Am., abundant; readily known by the 
white rump. 
420. ACCIPITER Brisson. (Lat., hawk.) 
a. Tarsus feathered less than 3 of the way down in front, the feathers well 
separated behind. (Accipiter.) 
807. A. velox (Wilson). SHarp-Surnnep Hawk. “PIGEON 
Hawk.” Tail truncate; tarsus sometimes “booted ”; general 
color bluish gray, breast, sides, etc., whitish, streaked with reddish 
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