DESCRIPTION OF A NEW FROG OF THE GENUS IXALUS 
FROM SELANGOR. 
By Ө. A. BOULENGER, F.R.S. 
IXALUS CASTANOMERUS, sp. nov. 
(ЕТЕ) 
EAD rg: large, a little broader than long; snout obtusely 
pointed, as long as the diameter of the orbit; canthus rostralis 
distinct ; conta region. concave; nostril a little nearer the end of the 
snout n the eye; interorbital space as broad as the upper eyelid ; 
tympanum slightly distinet, two-fifths the diameter of e. 
Fingers quite free; toes half webbed ; disks of Sagen а oes larger 
than the tympanum ; sub-artieular оекбаш small in 
herbas) tubercle. The tibio-tarsal articulation аьа the tip of the 
rown networ 
From snout to vent, 32 millimetres. 
А. single specimen, a female, from Bukit Kutu, Selangor, 3,500 feet, 
presented to the British Museum by the Curator of the Selangor State 
Museu 
This new species is very closely allied to the Iralus vermiculatus, 
Blgr. (Ann. Mag. Nat. Hist. (7) vi. 1900, p. 187), — a few 
years ago in the Larut Hills, at an altitude of 4,000 fee des is I. 
ERAN vios is figured alongside the new 
more rounded sn the more distinct tympanum, the rudiment of 
a veh peii ol the г dud and in the coloration. 
NOTES ON THE SUGAR CANE RAT, MUS JALORENSIS. 
By L. WRAY. 
X the request of the Hon. John Turner, M.L.C., Administrator 
and Attorney of the Penang Sugar Estates с апа 
Straits Sugar Company, 1 went to Lower гарч to superintend the 
administration of *rat virus" obtained from the deem fnm 
on the Rubana and Nova Scotia Estates, in Sept 
April, 1905, 
