PLATE 24. 



iLLTJSTRATrvE OF Mr. Macalister's Paper " On Two Dissimilar Forms 

 OF Perityphlic Pouches." 



Vide Proceedings R. I. Acad., Vol. 2, Ser. 2, p. 214. 



Kg. 1. Possa Retrocfficalis. 



a. Abdominal wall, cut and reflected. 

 h. External cutaneous nerve. 



c. Ilio-inguinal nerye. 



d. Fossa. 



e. Crest of ilium. 



/. Ascending colon, torn out of its bed. 



g. Ureter. 



h. Iliac artery. 



i. Genito-crural nerve. 



j. Psoas. 



Fig. 2. Subcecal Fossa, 



a. Abdominal wall, cut and reflected. 

 I. Ligamentum cseci (Huschke). 



c. Ascending colon. 



d. Fossa ileo-caecalis. 



e. Ileum. 



/. Rudiment of mesenteriolum. 

 g. Vemiiform appendix. 

 /*. Fossa sub-caecalis. 

 i. Psoas magnus. 



