LÖNNBERG, ANATOMY OF INDIAN TAPIR. 9 



caudate lobe. If that was the case tbe liver of tlie Rhino- 

 ceros should be of a type totally different from that of the 

 Tapir and that of the Horse. The liver of the latter animal 

 is rather similar to that of the Tapir except that the Spi- 

 gelian lobe is reduced and does not have any free end at 

 least not in the adulfc. 



The question about the homologies of the different parts 

 of the liver of the Rhinoceros might require more material 

 before it ean be solved with full certainty. Renvall has 

 based his interpretation on a young foetus of an African 

 Rhinoceros kept in this museum. In this specimen the liver 

 has a certain resemblance with Garrod's figure. To the right 

 of fissiira umbilicalis there is a large lobe, which Renvall 

 takes to be the right central lobe, but it might contain the 

 right låter al lobe as well. A trihedral lobe with the appea- 

 rance and situation of a caudate lobe Renvall assumes to 

 be the reduced right lateral lobe, while according to the same 

 author a thin and narrow lobe on the visceral surface of 

 this one is to be regarded as a small caudate lobe. Although 

 I will not deny the possibih'ty of such an interpretation, I 

 think there are some circumstances speaking against it. In 

 otlier species of Rhinoceros a rather long Spigelian lobe has 

 been found (conf. above) and it would therefore appear pro- 

 bable that such a one should exist in the African Rhinoceros 

 as well. It would therefore seem possible that the small and 

 thin lobe of the foetus of the African Rhinoceros, which Ren- 

 vall assumed to be a caudate lobe, really is a Spigelian lobe, 

 and likewise that what he called the reduced right lateral 

 lobe is the caudate lobe, while in such a case the real right 

 lateral lobe should be included in what he meant to be only 

 a very large right central lobe. In such a case the different 

 parts of the liver of the African Rhinoceros could be easily 

 homologised w^ith those of the Sumatran (Garrod) and the 

 Sondaic (Beddard and Treves), and all three species would 

 be found to agree pretty well with other Perissodactyla in 

 this respect. For such an interpretation as the one just 

 made speaks also the fact that in the Horse the right lobe 

 always is the larger in young animals. It should thus be 

 stränge if the right lobe should be so strongly reduced in the 

 foetus of a Rhinoceros. 



The length of the small intestine of the present specimen 



