14 
FALCOKIK^. NAUCLERUS, 
festoon on the upper mandible is much more prominent in 
Ictinia, while the nostrils, instead of being elliptical, are 
round, as in the Falcons. 
17. 1. Ictinia plumbea, Gmel. Mississippi Ictinia. — Missis- 
sippi Kite. 
Plate CXVII. Male and Female. 
Head, secondary quills, and lower parts light ash-grey ; back and 
wing coverts dark leaden-grey ; primaries black, margined externally 
with deep red ; tail bluish-black ; scutella dark purplish-red. 
Male, 14, 86. Female, 1.5. 
From Texas, where it is abundant, to North Carolina; up the Mis- 
sissippi to Natchez. Migratory. 
Mississippi Kite, Falco Mississippiensis, WiLS. Amer. Om. v< iii. p. 80, 
Falco plumbeus, Bonat. Syn. p. 90. 
Mississippi Kite, Falco plumbeus, Atju. Orn, Biog. v. ii. p. 108, v. v. p. 374. 
GENUS YIII. NAUCLERUS, Vig. SWALLOW-TAILED- 
HAWK. 
Bill short, wide at the base, much compressed toward the 
end; upper mandible with the dorsal line decurved from 
the base, the sides slightly convex, the edges with a slight 
festoon, the tip narrow and acute ; lower mandible with the 
angle very wide, the dorsal line straightish, the tip rounded 
and declinate. Nostrils round, with a central papilla. Head 
rather large, roundish, flattened ; neck short ; body compact. 
Feet short ; tarsus very short, thick, scaly all round ; toes 
scutellate above, scabrous beneath, with pointed papilla? ; 
claws rather long, curved, acuminate. Plumage blended, 
glossy. Wings extremely long, pointed, the third quill 
longest ; secondaries short. Tail extremely long, very deep- 
ly forked. 
18. 1. Nauclerus furcatus, Linn. Common Swallow-tailed 
Hawk. 
Plate LXXII. Male. 
Head, neck all round, and lower parts white ; back, wings, and tail 
black, glossed with blue and purple ; feet light blue, tinged with green ; 
claws flesh-coloured. 
