114 



MR. F. E, BEDDARB ON 'fHE 



[May 17, 



The anterior abdominal vein is double, but the right vein is 

 vei-y considerably larger than the left, especially posteriorly. The 

 two join far forward in the immediate neighbourhood of the 

 pancreas. They are here more nearly equisized. Posteriorly 

 there is another and the only other j unction between these paired 

 veins not far in front of the trif urcation of the caudal vein. After 

 this point the left anterior abdominal vein receives a branch from 

 the body- wall and ceases. It is not directly connected, as already 

 mentioned, with the caudal vein. Just after its origin from the 

 caudal vein the anterior abdominal gives rise to the single median 

 epigastric vein, which runs forward at least as far as the liver, to 

 which it gives off several branches. 



§ Veins of the Posterior Abdominal Region in Eryx. 



It is remarkable that differences occur in these veins between 

 the two species Eryx jacidus and E. conicus, if, that is to say, 



Text-fig. 21. 



f/>. 



Certain abdominal veins in JEri/x conicus, 



a, b, c, parietal veins; Ant.Abd., anterior abdominal ; Ep., epigastric; 

 L.aff.r., left afferent renal; B.aff.r., right afferent renal. 



the single example of E. jacukis which I have examined represents 

 the normal state of affairs. The veins in question in E7yx conicus 



