156 SUS-STUDIES. 



outer margin slightly concave below the tip, for the rest 

 broadly convex — has the other head the muzzle dark 

 colored, the profile-line convex, the ears large, having 

 the inner margin of a curved shape without concavity 

 passing over in the rather sharply pointed tip, beneath 

 the tip the outer margin deeply concave, then slightly 

 curved towards the rounded off angle, from where the 

 margin goes in a nearly straight line to the base of the 

 earopening. The skulls present the same striking difference 

 in the shape of the profile-line; moreover the small-eared 

 specimen has a more elongated and in all parts more 

 stoutly build skull, notwithstanding it belongs to a somewhat 

 younger individual as the less development of the molars 

 indicates. This small-eared, youngest but largest of the two 

 specimens has the bony palate extended much more back- 

 wards, the anterior palatine foramina more elongate piriform, 

 the distance between anterior incisors and end of inter- 

 maxillaria much larger, all the teeth are greater sized 

 together with small differences in shape, nasalia more 

 elongate and more slender, parietalia behind closer together 

 than in the older large-eared specimen — distance of parietalia 

 17 mm. in the former (the youngest but largest) and 28 

 mm. in the latter (the oldest but smallest) ! 



In the lower jaw the distance between the articular 

 condyle and the coronoid process is the smallest in the 

 largest of the two. So there are several more or less im- 

 portant differences to be observed between these two skulls 

 by close examination, differences very difficultly to describe 

 in a few lines, very evident however by an experienced 

 eye. By comparing the skulls with other ones of about the 

 same size and development it grows evident that they both 

 belong to female-specimens. As the large-eared, smallest 

 but oldest of these two specimens shows the same charac- 

 teristics in external appearance of the head as well as in 

 the above mentioned characteristics of the skull as are 

 peculiar to Sus vittatus, I do not hesitate to bring it under 

 that head — so that one of the so-called Nangoei- 



ISTotes from the Leytlen Museum, Vol. XXVI. 



