BLOOD- VASCULAR SYSTEM OF THE LORICATI II7 



stomach to the apex; while the former (tig. 37; R.Gas.A.) 

 crosses the corresponding vein and continues parallel with it 

 along the right and dorsal side of the stomach to the apex. From 

 the right gastric \\\^ posterior gaU-hladdcr artery is given off to 

 supply the posterior two thirds of the bladder, and a small branch 

 is also given off to a gland-like body marked G. Intestinal 

 arterVd, (fig. 37 ; Int.A.^j^) crosses over the right portal and con- 

 tinues caudad to the right of intestinal vein(,). Directly in front 

 of the spleen this artery divides into a dorsal and a ventral ves- 

 sel. The dorsal artery (fig. 37, Int.A.(|„,) passes to the right 

 of the spleen, gives off the splenic artery (fig. 37 ; Spl.A.) to 

 the spleen, and crossing the intestinal vessels^,) continues caudad 

 along the posterior horn of the iliac loop ; giving off numerous 

 branches to the anterior horn and the posterior end of the in- 

 testine, and finally terminates on the dorsal side of the rectum. 

 The ventral branch (fig. 37 ; Int.A.^,,,)) passes ventrad and to 

 the left of the spleen. Opposite the spleen it sends off the 

 ■posterior gastric artery (fig. 37 ; P. Gas, A.), which crosses the 

 cajca behind the corresponding vein, and supplies the posterior 

 or cardiac end of the stomach. The main ventral intestinal 

 vessel continues along the lower side of the posterior end of 

 the intestine and terminates on the ventral side of the rectum. 



Immediately after leaving the main trunk the celiac artery 

 (fig- 37 ; Coe.A.) gives off the right hepatic artery (figs. 37 

 and 38; R.Hep.A.), which after crossing the cceliac and right 

 portal sends off branches along the radicals of the right portal 

 to the right lobe of the liver, and also gives off the anterior 

 gall-bladder artery^ which supplies the anterior third of the 

 bladder, and does not anastomose with the posterior gall- 

 bladder artery. Passing beneath intestinal vesselS(i) the coeliac 

 artery gives off a rather large leji hepatic artery (figs. 37 and 

 38; L.Hep.A.), which follows along in front of the left portal, 

 giving off numerous branches to the left lobe of the liver, which 

 penetrate the liver with the large radicals of the common por- 

 tal ; while none of the branches of the left hepatic anastomose 

 with similar branches of the right hepatic, several of them send 

 up branches that supply the ventral portion of the stomach. 

 Shortly after the branching off of the left hepatic from the 



