164 ZOOTOMV. 



150. The divisions of the intestines: there is no dis- 

 tinction between the duodenum (du) or section immediately 

 succeeding the stomach and the ileUm (//), or remainder 

 of the small intestine : the latter, after one or two turns, 

 passes into the large intestine, or rectum (r), dis- 

 tinguished by its greater diameter and by having its anterior 

 end produced on the left side into a small blind pouch or 

 caecum. 



151. The pancreas (pri), an elongated, whitish gland, 

 situated in the loop between the stomach and duodenum, 

 and continued forwards to the posterior face of the left lobe 

 of the liver. 



152. The gastro-hepatic omentum, a thin sheet of 

 peritoneum extending from the dorsal surface of the liver to 

 the ventral surface of the stomach, and continued backwards 

 by the duodeno-hepatic omentum, which similarly 

 connects the liver with the first loop of the intestine. 



153. The mesogaster, a fold of peritoneum connecting 

 the stomach with the dorsal body-wall. 



154. The mesentery, a similar fold suspending the small 

 intestine. 



155. The mesorectum, a backward continuation of the 

 mesentery suspending the rectum. 



156. A similar fold attached to the free or dorsal edge of 

 the right lobe of the liver. 



157. The spleen (j//), a small, red body, lying in the 

 mesogaster, near the posterior end of the stomach. 



158. The dorsal aorta (d.ao), an unpaired longitudinal 

 artery lying in the middle dorsal line. 



159. The cceliaco-mesenteric artery (c.??i), given off 

 from the dorsal aorta at about the level of the anterior end 

 of the right testis, or ovary, and soon dividing into two 

 trunksj an anterior, the cceliac artery, supplying the 



