404 Dr. P. L. Sclater on ZElian's Wart-Hog. 
106. Megetra cancellata (Er.). This Mexican species is 
published under its name, but which, with the study of a 
larger series of specimens, Í think is a variety of M. vittata, 
Lec., with irregular markings. 
XL.—Note on Ailian’s Wart-Hog. 
By P. L. SCLATER, M.A., Ph.D., FRS- 
In the * Annals’ for August last (antex, p. 190) Dr. Gray has 
proposed to found a new species of wart-hog (Phacocherus 
Sclateri) upon an animal now living in the gardens of the 
Zoological Society of London. On the same page Dr. Gray 
had already stated his belief that this animal was “ only the 
usual form of the female African wart-hog," i. e. the Ph. 
ethiopicus. How the same specimen could be at once the 
type of a new species and the female of a well-known one, it 
is not easy to understand. : 
In a second note on the same subject, in the following 
number of the ‘Annals’ (anteà, p. 263), Dr. Gray acknow- 
ledges his error in "believing" that the before-mentioned 
animal could be the female of Ph. ethiopicus, but pays me the 
additional compliment of supposing that it may not be a wart- 
hog at all, and that it is Saai that I do not know the 
difference between Sus and Phacochærus ! i 
I had hoped that the October Number of the * Annals" 
would contain a further communication from Dr. Gray on 
the subject, in réctification of his second error; but such 
