•)0') 



DR. P. CHALMERS MITCHELL ON THE 



GRUIFORMES. 



Eallid^. — lu Ocydi'omus australls (tig. 11) what J. find to be the typical Ralliue 

 conformation of the intestinal tract is presented. The duodenvim is a straight, narrow 

 loop of moderate length. Meckel's tract is dra\\ n out into a definite number of Iooj)s, 

 all of wliich are fairly straight. The first of these, marked " a " in the figures, succeeds 

 the duodenum; the second (" lO " in the figures) is axial and bears on its distal side a 

 hirge Meckel's diverticulum. The third, marked " r," like the others is a narrow loop 

 belonging to the drainage of the middle mesenteric vein ; and the fourth is a well-marked 

 supra-duodenal looji drained by more than one bridging factor of the duodenal vein. Tiie 



FiK. 41. 



-X.2. 



Intt'stinal Tract of Ocytlrumiis idistralis. 

 a, /), c, the three h)(ip.s of MeckeFs Tract characteristic of the Gruiibrrue.-;. Other lettering as before. 



long cicca arc; closely attached to this last loop of Meckel's tract. The rectum is straight 

 and of moderate length. Tliis conformation is found in all the members of the Rallida^ 

 that I have examined, e. g., Aramldes ypecaha, Crew pratcnsis, (jullinula phoenicvni, 

 fon<)rii.i.s mariinicus, Porpliyrio cceriile^is, and P. polioccphalus. I described this condition 

 of 11k^ gut correctly in a former paper, but in the drawing of Crex (26. fig. 13) the third 

 iiiinoi- l()(»ji has been omitted by an unfortunate mistake, so that the description does not 



