AUSTRALIAN PHALAXGERS. 



lateral fissure, which, though directed towards the exit of 

 the inf. v. cava, does not reach it. It measures about 2.5 

 cm. It is also separated from the lateral lobe by the left 

 lat. fissure (3 cm. long), which dorsally reaches the inf. 

 vena cava. In addition a mesial or cystic fissure is noted 

 between the intermediate and left mesial portions (1.75 

 cm. long), directed dorsally towards the vena cava. The 

 mesial lobe measures 6.5 cm. laterally, and 5 cm. dorso- 

 ventrally, and is definitely separated from the lateral 

 lobes. 



Left Lateral Lobe. — This measures 5 cm. laterally 

 and 4.5 cm. dorso-ventrally, and usually presents a small 

 fissure on its left margin. It forms, with the cystic lobe, 

 the ventral margin of the liver, and is broader dorsally 

 than ventrally. On its dorso-internal margin is a small 

 concavity for the transmission of the oesophagus, which 

 passes between it and the spigelian lobe. 



Bif/I/t Lateral Lobe. — This measures 3 cm. laterally 

 and 3 cm. dorso-ventrally. and may present one or two 

 fissures on its dorsal margin. At its dorso-dextral mar- 

 gin the dorsal extremity of the caudate lobe is usually 

 seen. 



Inf. v. Cava. — On this aspect of the liver at the point 

 of convergence of all the lobes the exit of the inf. v. cava 

 is seen. In its hepatic course it is neither seen dorsally 

 nor ventrally. 



Diaphragmatic Attachments. — Dorsally the left late- 

 ral — mesial — and right lateral lobes have all a fine mem- 

 branous attachment to the tendinous diaphragm, and on 

 the left margin of the left cystic an extension forward is 

 seen, simulating a suspensory ligt., and passing out to the 

 muscular diaphragm above. The suspensory ligament 

 is attached above to the tendinous and muscular dia- 



10fi 



