1882.] PROF. ST. -GEORGE MIVART ON THE ^LUROIDEA, 511 



The right central lobe has a short and wide cystic fissure, through 

 which the gall-bladder appears. That portion of the right central 

 lobe which is on the right of the gall-bladder also appears to be 

 more in excess of the portion which is on the left of the gall-bladder 

 than it is in Genetta tigrina, and thus more to resemble its condi- 

 tion in the Cat. This appearance is caused by the circumstance 

 that, in the Civet, the large right lateral lobe comes down and ex- 

 cludes from view (on the abdominal surface) all that part of the 

 right central lobe which lies to the right of the gall-bladder. The 

 left central lobe is quite hidden from view when the abdominal 

 aspect of the liver is seen. The Spigelian lobe is much stouter than 

 in the Genet, and is not grooved. 



In Paradoxurus larvatus the liver is like that of the Genet, ex- 

 cept that the caudate lobe has become very large at the expense of 

 the right lateral ; so that, on the diaphragmatic surface, the right 

 lateral lobe appears as a triangle between the caudate aad the large 

 right central lobes. There is no gall-bladder ; nevertheless the right 

 central lobe is notched as in the Genet. The left, lateral and left 

 central lobes present, on their diaphragmatic surface, an appearance 

 similar to that which they present in Genetta. The posterior 

 (gastric) aspect of the liver is also much as in the Genet, save that 

 the caudate lobe is very large and the Spigelian lobe smaller, not 

 grooved and slightly bifurcated at its apex. 



In Nandinia the diaphragmatic aspect of the liver is much as in 

 Viverra, but the right lateral lobe is smaller in proportion to the 

 right central, though not so much smaller in relation to it as in 

 Genetta. The right central is deeply notched at its ventral margin, 

 but does not show any gall-bladder. The left central lobe is rather 

 smaller in proportion to the left lateral than in Viverra, and is larger 

 in proportion to its breadth. The left lateral lobe is nearly bisected 

 by a transverse fissure which runs inwards from its lateral margin. 

 The abdominal (gastric) aspect of the liver shows a caudate and a 

 Spigelian lobe nearly as in Genetta. The left central is quite ex- 

 cluded from view. That part of the right central lobe which is on 

 the right of the gall-bladder is more in excess of the part on the 

 left, and is much as it is in the Cat. 



In Aretictis, on the diaphragmatic aspect of the liver, the right 

 and left segments appear nearly equal ; the right lateral and right 

 central lobes are also nearly equal. The latter has two ventral 

 notches, the one more to the right being the cystic notch. No gall- 

 bladder, however, appears. The proportions of the left lateral and 

 left central lobes are much as in Nandinia ; but the apex of the left 

 central is separated off by an oblique transverse groove. 



The posterior aspect of the liver is very like that of the liver of Nan- 

 dinia ; but there is no transverse groove on the left lateral lobe. That 

 portion of the right central lobe which is on the right of the cystic 

 notch is smaller than the portion which is on the left of that notch. 

 The latter portion has four or five superficial fissures. In this con- 

 dition of excess in the left portion of the right central lobe Aretictis 

 differs from Felis, Genetta, Viverra, Paradoxurus, and Nandinia. 



