SPARROW HAWK. ^41 



«d, the tip obli(|uely truncate, rounded, with a shallow 

 sinus behind. 



The upper mandible within is slightly concave ; the 

 lower deeply concave, with a slight prominent central 

 line. On the palate are two parallel slightly papillate 

 ridges. The palatal slit is narrow-oblong behind, li- 

 near before, laterally with two curved papillate lines 

 on each side. The tongue, which is sagittate and pa- 

 pillate behind, is fleshy, oblong, channelled above, the 

 tip rounded and emarginate, its lower surface horny, 

 with a shallow central groove. The oesophagus, which 

 is four inches and a half long, is thin, five-twelfths of an 

 inch in diameter ; above the middle dilated on the right 

 side of the trachea into a crop capable of being distend- 

 ed into a bag one inch in diameter at the middle, and 

 nearly two inches long. The proventriculus is eight- 

 twelfths long, not contracted below, thick and glandu- 

 lar, with four slight longitudinal depressions internally. 

 The stomach when distended is an oblong, slightly 

 flattened bag, widest below, an inch and three-twelfths 

 long, its muscular coat thin, the tendons about three- 

 twelfths in diameter, the inner coat soft and with- 

 out wrinkles. The pylorus is very narrow, with three 

 soft protuberances, one smaller than the rest. The in- 

 testine, which is two feet six inches in length, has a 

 diameter of three-twelfths as far as the entrance of the 

 biliary and pancreatic ducts at about six inches from 

 the pylorus, beyond which it gradually contracts to the 

 coeca, where its diameter is two-twelfths. The coeca 

 are tw^o very small appendages, scarcely perceptible, 

 adherent, two-twelfths in length, with a cavity dilatable 

 to one-twelfth. Tliey are three and a-half inches dis- 



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