1886.] DR. O. FINSCH ON A NEW WILD PIG. 217 
would most certainly have taken them into account as arguments in 
favour of his doctrine of Evolution. 
So far as my own observations have extended, and each month 
adds new facts, there seem to be few forms of disease peculiar to 
Fig. 9. 
Tleo-cecal intussusception in a Lemur. ¢, colon; 7, ileum. 
Man. On the other hand, certain affections occur in some animals 
with much greater frequency than in him, whilst a few diseases are 
entirely confined to them; many are also modified by peculiarity in 
structure, mode of life, and environment of the affected animal. 
2. On a new Species of Wild Pig from New Guinea. 
By Dr. O. Finscu, C.M.Z.S. &c. 
[Received March 22, 1886.] 
The second species of true Sus from New Guinea is a very distinct 
one, and may be separated at once from the well-known Sus papuensis 
by the following characters :— 
Sus NIGER, sp. nov. 
Uniform blackish, even when young. 
These characters are sufficient, in all ages, to separate the present 
species from Sus papuensis, which is quite different, being in the 
adult brown, with a very distinct light-coloured mystacal stripe and 
legs, while the young is rusty brown with light rusty-yellow stripes, 
as inour Wild Boar. 
Proc. Zoou. Soc.—1886, No. XV. 15 
