pvc 



pcv 



Wd 



vv 



bd 



I 



o 



rP 

 rp 



rp 



(/' 



■U' 



' ao 



/'■ g 



hk 



7 da 



Wd 



pvc.\ 





\pcv 



Ar'p 

 ■/r-p 

 • r-p 



4 do 



pvc 



pcv -, 



Wdf 



\ma 

 X pcv 



Pig. H. Cross sections of stage VIII. 1-8 from before backwards, ao, aorta ; be, body 

 cavity; bd, bile duct; Cv, Cuverian vein; da, dorsal aorta; g, gut; gb, gall bladder; gl. 

 glomerulus ; hk, head-kidney ; 1, liver ; ma. mesenterial artery ; ne, nephrostome ; oe, 

 oesophagus ; pcv. posterior cardinal vein ; pvc, posterior vena cava ; rlu, rudiment of the 

 lung; r'p, r"p, r"'p, 1st, 2d, 3d rudiment of the pancreas; sv, sinus venosus; vv, vitelline 

 vein; Wd, Wolffian duct; y, yolk-mass. 



