66 ALLEN 
and the remaining branches follow terminal branches (c), (@) 
and (e). Ordinarily 1 or 2 branches from the last mentioned 
arteries follow along in the gastro-hepatic omentum to supply 
the ventral portion of the stomach. All of the branches of the 
left hepatic artery follow their corresponding venous trunks to 
their terminal endings in the substance of the liver. The left 
hepatic artery furnishes the principal arterial supply for the 
liver, but in some specimens an additional fosterzor or mz¢nor 
left hepatic artery (Pl. I, fig. 11; L.Hep.A.,,)) arises from the 
ceeliac a little farther caudad than the main left hepatic artery 
and anastomoses with the posterior branches of the left hepatic 
vessel. Beside the left hepatic vessels there is also the right 
hepatic artery for the small right lobe of the liver, which will 
be described further on under the mesenteric artery. 
Continuing caudad, parallel, but to the right of the left 
portal vein, the cceliac artery divides directly in front of the 
pylorus into a right and left pyloric czca artery. One of 
these forks (usually the right) is always considerably longer 
than the other. The right pyloric ceca artery( Pl. I, figs. 1 and 
6; R.Cze.A.) passes at least two-thirds around the pylorus, in- 
side of the pyloric ceca vein a little above the ceca, and in its 
course gives off at least 3 branches to the ceca. Within the 
ceca the larger vessels run in the muscular coats and break up 
into a capillary network in the connective tissue layer of the 
crypts as in the intestine. One branch of the right pyloric 
ceca artery is sent off to the pylorus and 2 rather large pos- 
terior gastric arteries are given off to the posterior or cardiac 
portion of the stomach. From the 77ght posterior gastric ar- 
tery (fig. 1; R.P.Gas.A.) one or more branches run along in 
the peritoneal fold over the ceca to anastomose with the intes- 
tinal branch of the mesenteric artery. The left pyloric ceca 
artery, which is usually much smaller than the right, pursues 
a similar course on the left side of the pylorus, giving off 2 or 
3 branches to the ceca and one to the pylorus. When this is 
the smaller of the 2 ceca arteries, no branches are given off 
from it to the posterior end of the stomach, however, only in 
about one case in Io is the left pyloric ceca artery larger than 
the right. 
