234 Mr: H. G) Rowmeonion 
less strongly marked. It also has the frontal outline convex 
and the interorbital space slightly convex and not flattened. 
It is impossible, therefore, to identify the specimen above 
described with B, medius, although, like that species, it has 
the muzzle smaller and lighter than in B. gabbi. Since 
Thomas says nothing about the bulle and the downward 
extension of the pterygoid, I presume that in those respects 
B. medius is like B. gabbi. 
Since writing the foregoing description of B. beddardi and 
determining its distinctness from extant descriptions and 
published figures, I have compared the skull with the skulls 
of the genus Bassaricyon in the British Museum, which, as 
identified by Oldfield Thomas, belong to the species allent, 
gabbi, and medius. This comparison completely confirms my 
previously formed opinion as to the validity of the species. 
Although I have laid undue stress upon the downward exten- 
sion of the pterygoid, I have no doubt whatever that the 
specimen above described represents a hitherto unrecognized 
form characterized mainly by the combination of the following 
characters :—(1) The flat interorbital region followed by the 
high rounded forehead ; (2) the great width of the palate 
and mesopterygoid fossa; (3) the anterior inflation of the 
bulla. 
I may add that in the original figure of the type of B. allenz 
the posterior inflation of the bulla, seen from the side, is not 
adequately represented, and that in an example of B. gabba 
from Chiriqui the styloid portion of the bulla is much more 
deeply excavated than in B. beddardi. This point is not 
clearly indicated in Allen’s photogravure of the skull (doe. ect. 
p- 665, fig. 10). 
XXX.— Two new Indo-Malayan Rats. 
By Hersert C. Rosinson, C.M.Z.S. 
(Published by permission of the Trustees of the British Museum.) 
EXAMINATION of the type and other specimens in the British 
Museum attributed to Lattus rajah (Thos.) shows that two 
forms are represented—viz., the true &. rajah trom various 
parts of Sarawak, and another from Kina Balu, in British 
North Borneo, apparently unnamed, which I propose to call 
