166 SUS-STUDIES. 



was a good species, as I received a letter from Sumatra 

 announcing that a couple, male and female, had been 

 procured and were at my disposal. I thought it wise to 

 remove the publication of this paper to the time when I 

 should have the individuals before me, so that I could give 

 a description of the animal, adult and young, male and 

 female, with the bony parts in the different stages of 

 development. And now I have at my disposal the following 

 material of Sus oi: the skull of a specimen with six molars, 

 a skin with skull of a younger specimen with five molars, 

 a skull of a still younger individual with five molars, be- 

 sides the head belonging to that skull, an adult female 

 with her young (a male); the latter two specimens are at 

 present living in the Rotterdam-Zoological Garden, being 

 kindly presented to the Leyden Museum by Mr. v. Rijn v. 

 Alkemade, Resident at Palembang. This living female mea- 

 sures along the spine from between the ears to the base 

 of the tail 107 cm., height at the haunches 72 cm., at the 

 middle of back 78 cm., and at the shoulders 74 cm.; com- 

 paring with Miller's measurements we see that his typical 

 male-specimen is a good deal larger than our adult female. 

 The young specimen, although only some months old, has 

 attained about the size of its mother. I therefore suggest 

 that the male attains, if fullgrown, a larger size than the 

 female. I happily could now study the animals from the 

 life and can give a better description than when studied 

 from the most exactly mounted specimens, moreover we 

 have the great adventage to give photo's from the life. Sus 

 oi makes indeed a very strange impression, quite different 

 from all other Pigs. This remarkable animal has its flanks 

 much flatter than other pigs have, so that the body is very 

 oval in section ; at the base of the tail there is a rather 

 deep fold in the skin, therefore it makes the impression 

 as if the tail has been pushed into the body, so as we 

 find it sometimes in badly mounted mammals; the tail is 

 very flat, compressed ; along its upper and under margin 

 there is a row of standing stiff black hairs, growing longer 



Notes from the Leyden ]VIuseurii, Vol. XX. VI. 



