1898.] 



AlfATOMT OF PEDETES CAEFER. 



881 



but rapidly narrows, and 7 inches from the valve attains its 

 normal calibre. It measures 3 feet 10 inches from the valve to 

 the anus. 



The alimentary canal of the foetus corresponds very accurately 

 with that of its mother ; the caecum has the same arrangement. 

 No Meckel's diverticulum was seen in the ileum. 



The Pancreas is a fleshy tongue-shaped gland, about 3 inches 

 long, lying in the concavity of the duodenum ; its duct enters the 

 latter about 3 inches from the pylorus (see fig. 9). 



The Spleen is relatively very small ; it measures 1| inches in 

 its long diameter, and is remarkable for having a notch on its 

 posterior border (see fig. 9). In the foetus it was comparatively 

 much longer and was triangular in section ; no notches were 

 present. 



Fig. 11. 



P.V. R.C 



Under surface of liver of Pedetes. 



R.L. 

 R.C. 

 L.O. 

 L.L. 



Right lateral lobe. 

 Right central lobe. 

 Left central lobe. 

 Left lateral lobe. 



C. Caudate lobe. 

 Sp. Spigelian lobe. 

 P.V. Portal vein. 

 V.C. Vena cava. 



The Liver contains the six typical lobes — right and left central, 

 right and left lateral, spigelian, and caudate. Of these the left 

 lateral is much the largest, and the caudate has the characteristic 

 leaf-like shape. lu the foetus the lobulation is identical, but 

 neither in it nor in the adult specimen is there any gall-bladder. 



On comparing the digestive system of Dljpus with that of 

 Pedetes, it was noticed that the depressions behind the incisor 

 and on the outer sides of the molar teeth are wanting, while the 

 ridges on the hard palate extend back as far as the last molar 

 tooth. There are, however, the same two triangular patches of 

 fur, m eeting by their apices behind the upper incisors. In the 

 stomach the great cul-de-sac is better developed than it is in 



