INTESTINAL TKACT OF BIRDS. 



233 



practically identical with that oi Numenius; but the fold"«"is represented by two 

 loops, and loop "c" is partly fused with, or not separated from, the very large supra- 

 duodenal loop to which tlie long cneca are attached. 



Glaheolid.i:. — In Glareola ocularis (hg. 51), and 6'. pralincola is practically identical 

 in this matter, another very simple modification of the Numcnlm type is displayed. 

 The duodenum is similar; Meckel's tract is relatively shorter, and is thrown into Ioojjs 

 " <(," " W" with a small Meckel's diverticulum at its base, and a large and wide supra- 

 duodenal loop, loop "c " not being formed. The ctcca are attached in the usual way to 

 the supra-duodenal loop, and the rectum is short, wide, and straight. 



Fifr. 53. 



XI. 



Intestinal Tract (if Parri 



•I'll jdcana. 



Lctturinn; as iu tiir. 41. 



Thixocokid.e. — In Tli'mocon/s ruuiicivorus (tig. 52) a condition essentially similar to 

 hat found in Glareola is displayed. The duodenum is similar ; Meckel's tract is 

 uispended at the end of an oval stretch of mesentery, and in it loop " b " wit li (he 

 liverticulum at its base is obvious, although in the drawing it is represented as turned 

 ip instead of running out in the axial line. Loops " a " and " c " are not differentiated, 

 nd the supra-duodenal loop to which the long caeca are attached is not sharply 

 eparated off except at its apex. The rectum is straight, wide, and of moderate length. 



Q^]dicnemid_1]:. — In CEdicnemus scolopad-, the Stone-Curlew, there is displayed a con- 

 irmation closely similar to that found in Tkinocori/s and Glareola. The duodeninn 



