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BUTEO, BUZZARD. 



Bill shorter than the head, deeper than broad towards 

 the base, compressed towards the end, strong, with a 

 longish curved tip : upper mandible with a cere of mo^ 

 derate size, its dorsal outline sloping a little and slightly- 

 convex as far as the edge of the cere, beyond which it 

 is curved so as to form rather more than the fourth of 

 a circle, the ridge broad and rather flat at the base, 

 narrowed and convex towards the end, the sides slop- 

 ing and convex, the edges overlapping, with a distinct 

 sharp-edged rounded festoon, behind which is a slighter 

 undulation, and before it a shallow sinus ending in the 

 curve of the tip, which is deflected, subtrigonal, acute, 

 flattish beneath, its lower part almost perpendicular ; 

 lower mandible with the angle medial, broad and 

 rounded, the dorsal line slightly convex, the ridge 

 broadly convex, the sides rounded, the edges sharp, 

 inflected, slightly curved, the tip broad, rounded, with 

 its edges decurved. 



Mouth wide ; palate flat ; upper mandible concave 

 within, the lower more deeply so ; the palatal slit de- 

 fended by acute papillae, the glottis also papillate be- 

 hind. Tongue papillate at the base, short, fleshy, 

 slightly concave above, rounded and emarginate at the 

 horny extremity. (Esophagus wide, dilated above the 



