160 Mr. O. Thomas on new 
from above) and all the margins are narrowly edged with 
black. The elytra are subparallel for two thirds their length, 
and then are arcuately narrowed to the apex, very coarsely 
punctured except at the base, with a tendency to form lines 
on the disk only; the reddish-yellow fascia occupies about 
one third of the length. The tibiz are densely clothed with 
short black pubescence ; the anterior and intermediate pairs 
beset on their outer edge with short acute spines, which make 
them appear crenulate in certain positions. ‘T'arsi stout, the 
fifth joint longer than the four previous joints taken together ; 
claws red at their base. Trochanters more or less red. 
XXII.—Preliminary Diagnoses of new Mammals from 
Northern Luzon, collected by Mr. John Whitehead. By 
OLDFIELD ‘THOMAS. 
THE following new mammals, which are so distinct from 
anything hitherto known as to represent quite a new fauna, 
have been obtained by Mr. John Whitehead in the highlands 
of Northern Luzon. A full account of the collection will, it 
is hoped, be published later. 
RHYNCHOMYS, gen. nov. 
Muzzle enormously elongated. Incisors short and feeble. 
Molars minute, only two in number above and below. 
Form not unlike that of a gigantic shrew. Feet and tail 
rat-like. 
Rhynchomys sortcotdes, sp. n. 
Size about that of Mus rattus. Fur very thick, close and 
velvety. General colour uniform dark olivaceous grey, 
without decided markings anywhere. Under surface dirty 
grey, not sharply defined; a white patch on throat sometimes 
present. Ears about as in Mus rattus, their visible surface, 
when folded, clothed with blackish hairs. Metapodials 
brown, digits whitish. ‘Tail shorter than head and body, 
fairly clothed, but not tufted, blackish above, scarcely paler 
below. 
Dimensions of type (3) :— 
Head and body 215 millim.; tail 146; hind foot (moist- 
ened) 41. 
Skull: basal length 44; diastema 16°8; length of the two 
upper molars 2°5. 
