On new Muride from South America. 479 
length. General colour above brown (between Prout’s 
brown and mummy-brown), finely ticked with buffy, the 
ticking markedly finer than the coarse grizzling or lining of 
other species. Sides a little paler than back, but essentially 
siunilar, without any tinge of rufous. Under surface soiled 
grey, the ends of the hairs washed with buffy ; chin and 
throat paler, a patch of white (to the roots of the hairs) 
present on the interramia in both specimens. LEars darker 
than head, the proectote and metentote nearly black. Hands 
and feet dark brown. Tail uniformly blackish brown. 
Skull with long heavy muzzle, the nasals slightly 
trumpet-shaped terminally. Bulle larger than in O.jultace. 
Dimensions of the type (measured in flesh) :— 
Head and body 150 mm.; tail 126; hind foot 31; 
ear 21. \ 
Skull: greatest length 37°5 ; condylo-incisive length 52:5 ; 
aygomatic breadth 16; nasals 14°38 x 5 ; interorbital breadth 
G6; palatilar length 13°7; palatal foramina 7°6 ; upper 
wolar series 5°5. 
flab. Charuplaya, Upper Mamoré, 65° 5’ W., 16° S., 
Bolivia. Alt. 1350 m. 
Type. Adult male. B.M. no. 2. 1. 1. 95. Original 
number 1441. Collected 21st May, 1901, by Perry O. 
Simons. Presented by Oldfield Thomas. Two specimens. 
This brown species is one which I formerly thought to be 
O. juliace, Allen, but as its most marked character is the 
_complete absence of red in its coloration, and the reddish sides 
and chestnut back of O.judiace are emphasized in Allen’s 
description, I am now driven to conclude that it is distinct, 
Thomasomys laniger emeritus, subsp. n. 
Closely similar to true laniger, but larger. 
General characiers and colour quite as in laniger, though 
the light postauricular patch is scarcely perceptible. 
Skull longer than that of daniger, although the single 
specimen of emeritus is younger than the majority of our 
series of laniger. Palatal foramina not so nearly reaching 
the level of the front of m'. Mesopterygoid fossa more 
broadened in front, narrowed posteriorly; in laniger it is 
always more nearly, sometimes quite, parallel-sided. 
Dimensions of the type (measured on skin) :— 
Vail 132 mim. ; hind foot 23. 
Skull: greatest length 29°7; condylo-incisive length 26 ; 
zygomatic breadth 15°3; nasals 10°6; interorbital breadth 
