938 OLDFIELD THOMAS 
92. Mus berdmorei, Bry. 
a. 9. Bhamò. 
b. 9. Thagatà, Tenasserim. 
Head and body Tail Hind-foot Ear Heel to front 
of last foot pad 
TW Qe 142 163 35 22 - 16.2 
DOS 170 —_ 32 20 16.3 
Mammae 3 — 2= 10. Ears large, rounded, laid forward they 
reach to or beyond the anterior canthus of the eye. Soles quite 
smooth, naked; pads very prominent, but rather small. Fifth 
hind-toe reaching to the base of the first phalanx of the fourth. 
Tail very finely ringed, the rings of scales averaging from 13 
to 15 to the centimetre; its end brown in the Thagata, white 
in the Bhamo specimen. 
Skull measurement of b. Basal length 36.4; greatest breadth 
21.8; nasals, length 14; interorbital breadth 6.8; interparietal 
length 4.0, breadth 10.3; anterior zygoma-root, length 4.0: 
distance from outer corner of one infraorbital foramen to that 
of the other 10.4; palate length 21.4; anterior palatine fora-, 
men, length 7.1; diastema 12.9; length of upper molar series 6.0. 
The discovery of this species by Signor Fea both at Bhamo 
and Thagata confirms the determination (!) of the two rats from 
Manipur presented by Mr. A. O. Hume to the British Museum. 
The original specimen described by Mr. Blyth came from Mergui, 
so that the species has a considerable range within the Burmese 
region. 
Signor Fea’s well preserved spirit specimens are of value as 
enabling me to give the above comparatively trustworthy mea- 
surement, and the more important characters of the ears, feet, 
tail, and, above all, of the mammae. In its number of mammae 
this species agrees with the southern examples of M. bowers: 
(see above) but with no other known rat, the only other Mu- 
ridae that have this formula being mice of the subgenus Leg- 
(1) P. Z. S., 1886, p. 62. See also p. 525 of W. Sclater’s valuable paper on Indian 
Muridae (P. Z. S., 1890), a paper published long after the greater part of the present 
one was prepared. 
