AQUILA. EAGLE. 



Bill shorter than the head, very deep, compressed, 

 straight, with a longish curved tip : upper mandible 

 with a broad cere at the base, its dorsal outline nearly 

 straight but sloping a little at the base, beyond the cere 

 curved so as to form the fourth of a circle, the ridge 

 convex, the sides slightly convex and sloping, the edges 

 sharp, overlapping, nearly straight, with a slight fes- 

 toon, and a shallow sinus close to the tip, which is de- 

 flected, subtrigonal, acute, concave beneath, its lower 

 part perpendicular ; lower mandible with the angle me- 

 dial, rather broad and rounded, the dorsal line couvex, 

 the ridge rounded, the sides convex, the edges sharp, 

 inflected, straight nntll near the tip, which is obliquely 

 truncate and rounded. 



Mouth ratlier wide ; palate flat ; upper mandible con- 

 cave withiu, the lower more deeply so ; the palatal slit 

 defended by acute papillae, the glottis also papillate be- 

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

 ly concave above, rounded and slightly retuse at the 

 extremity. Oesophagus wide, dilated about the mid- 

 dle, at the lower part gradually enlarged and glandular, 

 the cylindrical glandules forming a broad belt. Stomach 

 compressed, oblong, slightly curved, the two radiated 

 tendons small, and the muscles thin. Pylorus with a 



