THE ELASMOBRANCH FISHES 



185 



Fig. 174. Vascular supply to the digestive tract, Heterodontus francisci. (Duncan Dunning, 

 del.) 



a.g., anterior gastric artery; a.g.v., anterior gastric vein; a.gs., anterior gastrosplenic 

 artery; a.gs.v., anterior gastrosplenic vein; a.i.a., anterior intestinal artery; aw., annular 

 artery; ce., coeliac axis; co., colon; c.s., cardiac stomach; dch., ductus choledochus; d.i.a., 

 dorsal intestinal artery; d.i.v., dorsal intestinal vein; dw., duodenum; ep., epigonal artery; 

 gli., gastrohepatic ; h., hepatic artery; Ji.p., hepatic portal vein; i.m., inferior mesenteric; 

 oe., oesophagus; p.^s., posterior gastrosplenic artery; p.gs.v., posterior gastrosplenic vein; 

 p.i.a., posterior intestinal artery ; p.i.v., posterior intestinal vein ; pn., pancreatic artery ; 

 p.s., pyloric stomach; ?"C., rectum; s.m., superior mesenteric artery; v.g., ventral gastric 

 artery ; v.g. v., ventral gastric vein ; v.i.a., ventral intestinal artery. 



