orlop e'nteraooel-ss , causes the latter to be pushed 

 in at the point of contact. AS the process continues 

 those pants of the posterior interocoelej lying on 



either side of this inpushing area are forced to 

 flow forvrard around the oesophagus and under the 

 hydrocoele : thus we have the posterior enterocoeles 

 becoming horse-shoe shaped the two horns of which 

 lie undep the horns of the hydrocoele. 



Lying dorsal to the stomach we find a small 

 enterocoele which was not present in "B%or if present 

 not in this position. It is the rudiment of the body 

 cavity which in the adult lies aboral to the stomach 

 and which has been recently appropriately termed the 

 epigastric enterocoele. ffo 6 «» 7. -tc. 



As to the origin of this structure I have no 

 direct observation to give but certain facts have 



led me to believe that it is fofmed from the right 



anterior enterocoele. These facts may be summed up 



as follows: In "B" no epigastric enterocoele exists 



oja. r cut 



but the two anterior enterocoeles (Fig. 4.) lie side 

 by side, anterior to the stomach and the posterior 

 enterocoele. In "C" (Figs .6 and7 .)an epigastric pouch, 

 equal in size to the right antecior enterocoele of "B" , 

 is to be found ,but by the side of the oesophagus 

 only the left anterior enterocoele remains. i|js 6*7 **^ 



