Genus— E URYSTOMUS. 
Eurystomus Vieillot, Analyse Nouv. Om., p. 37, April, 
1816 Type E. orientalis. 
Colaris Cuvier, Le Regne Animal, Vol. I., p. 401, Dec., 
1816 Type E. orientalis. 
Also spelt — 
OoUaria Selby, Cat. Gen. Subgen., Types Aves, 1840, p. 35, notes. 
CoRAcnNE birds with bills broad at base rapidly narrowing to a sharp point, 
long wings, square medium tails and small legs and feet. 
The bill is depressed, broadly triangular, not keeled, although the culmen 
ridge is pronounced, tip strongly hooked, laterals flattened, edges sinuate. 
The lower mandible is narrow, the rami thin and perpendicular, the 
interramal space short and broad, the tip slightly decurved and emarginate. 
The nostrils are placed near the base of the bill and are hidden by 
bristly feathers. 
The wing is long, the second primary longest, the first about equal to 
the third, which slightly exceeds the fourth, these primaries forming the tip 
of the wing. 
The tail is of medium length, square and about half the length of the 
wing ; the feathers broad and twelve in number. 
The legs and feet are small : the tarsus very short, less than half the 
length of the middle toe : covered with scutes in front and finely reticulated 
behind. The toes are of medium length, the outer toe scarcely united to the 
middle, the inner Joined for the length of the basal joint. Claws long, middle 
claw very long, hind claw short. 
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