189S] GULAR POUCH OF THE GREAT BUSTARD 321 



FIG. 5.— Dissection of the right side of the neck of the Great Bustard, Otis tarda, to show the- 

 hour-glass-shaped gular pouch. [Drawn by H. Grbnvold from the specimen in the British 

 Museum. 1 C. Crop; //. Hyoid ; Oe. Oesophagus ; P. Pouch ; T. Trachea ; I . ^ ascular 

 tissue, investing the upper part of the pouch 



