KOALA. 



though occasionally the left lobe is the smallest of all. 

 Along its right edge numerous small fissures may be ob- 

 served, and the intermediate lobe may be partly divided 

 into two by a fissure. Between the large and intermedi- 

 ate lobes a cleft is seen, where the gall bladder is described 

 dorsally. Anteriorally this cleft measures 2.5 cm. in 

 width, while posteriorally it narrows — its length ventro- 

 dorsally is 5 cm. A well defined fissure separates the in- 

 termediate portion of the mesial lobe from the left por- 

 tion. Traced from the back of the left portion at the 

 inf. v. cava towards the posterior extremity of this fis- 

 sure, along the right of which it may be traced for 1 cm., 

 is the mesial or suspensory ligament. It is attached above 

 to the diaphragm, and the length of its hepatic attachment 

 is 3.5 cm. The cystic or mesial lobe is well separated 

 from the left lateral lobe by a fissure extending dorsally 

 to within a short distance of the post hepatic surface. 



Left Lateral Lobe. — This may measure dorso-ven- 

 trallv 14 cm., width laterally 8 cm., so that it is much 

 larger than the right lateral lobe. Its left margin is fre- 

 quently fissured. On the inner or right margin is the 

 concavity for the oesophagus, on its way to the stomach. 



Diaphragmatic Attachments. — The dorsal half of the 

 left lateral, and of the inner and dorsal part of the right 

 lateral are closely attached to the tendinous portion of the 

 diaphragm. In addition, certain suspensory folds or 

 bands may be recognized. 



(1) Mesial described above. 



(2) Right lateral, from the diaphragmatic aspect 



of the right cystic and adjacent right lateral 

 lobe. 



(3) Left lateral (one or two), from the diaphrag- 



matic aspect of the left lateral lobe. 

 All these go to the tendinous part of the diaphragm. 



69 



