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PANDION. OSPREY 



Bill shorter than the head, strong, as broad as deep 

 at the base ; upper mandible with a rather narrow cere, 

 its dorsal outline sloping a little as far as the edge of 

 the cere, the rest curved so as to form about the third 

 of a circle, the ridge broadly convex, the sides also 

 convex, the edges sharp and slightly inflected, with a 

 slight festoon, and a wide shallow sinus at the curva- 

 ture, the tip deflected, trigonal, very acute, nearly per- 

 pendicular at the end to the gape line ; lower mandible 

 with the angle short, broad, and rounded, the dorsal 

 line convex, the ridge broadly rounded, the sides con- 

 vex, the edges sharp, inflected, considerably curved, 

 the tip obliquely truncate and rounded. 



Mouth of ordinary width ; palate flat ; upper man- 

 dible concave within, the lower more deeply so ; the 

 palatal slit defended by acute papillae, the glottis also 

 papillate behind. Tongue papillate at the base, short, 

 fleshy, slightly concave above, rounded at the extremity 

 with a shallow notch. (Esophagus wide, slightly di- 

 lated about the middle, and again at the lower extre- 

 mity, which is studded with cylindrical glandules. 

 Stomach large, oblong, its muscular coat very thin, as 

 are the two indistinct central tendons ; the inner coat 



soft, without rugae. Intestine very slender, nearly uni- 



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