ON THE ANATOMY OF THE KOALA. 



179 



from the figures than from any verbal description. They are more 

 conspicuous on the visceral than the thoracic surface. The right half 

 of the right central lobe has one such notch on its right external border ; 

 the other half 3, on the right internal border; the left central has 4, the 



Fig. 2. 



P. Z.S. 1881, 

 p. 187. 



G.U 



The same, from below. 



R. C. Eight central lobe; L.C. left central lobe; R.L. right lateral lobe; L.L. left 

 lateral lobe ; C. caudate lobe ; SP. Spigelian lobe ; G.B. gall-bladder ; G.D. 

 bile-duct; r.l.f. right lateral fissure; l.Lf. left lateral fissure; u.f. umbilical 

 fissure; c.f. cystic fissure; V.C. vena cava inferior-, V.P. vena portce; V.H. 

 hepatic vein. 



left lateral 3, whilst the right lateral is still more cut up by about 10. 

 Finally, the caudate has 3 of these supplementary fissures. 



The gall-bladder is remarkably long, projecting far beyond the anterior 

 margin of the liver, and, as already described, appearing superficially. 



N2 



P. Z. S. 1881 

 p. 185. 



