MAMMALS FROM BURMA 937 
This very remarkable new species has all the external cha- 
racteristics of a gigantic Chiropodomys, but its skull and teeth 
are so wholly those of Mus that I prefer for the present to call 
it a member of the latter genus. In many respects it is allied 
to the Mus jerdont group of rats, which are themselves more 
arboreal in habits than the others members of the genus, and 
among which therefore such a specialization as a grasping hind- 
foot might be most easily expected to occur. 
91. Mus bowersi, ANDERS. 
_ 4 specimens Thao. 
8 » 2. Yado, January 1888. 
2 » 7 ©. Thagata. 
2 » 7 9. imm. Pla-poo. 
Head and body Tail Hind-foot Har. 
Yado Ov 239 209 ol 23 
Thagata 27. 216 285 52 22 
stbllegor 215 271 5] 23 
Mammae of 4 Carin specimens, 2 — 2 = 8, of the Tenasserim 
females 3 — 2= 10. 
I am very doubtful as to whether the above difference in the 
number of the mammae, a character usually of specific impor- 
tance, does not necessitate the separation of the Tenasserim 
individuals with 3 —2= 10 mammae from the Carin ones with 
only 2—2=8. The original typical specimen obtained by 
Dr. Anderson at Hotha, in Yunnan, and a skin collected by 
Mr. A. O. Hume at Machi, Manipur, both have 2—2=8 
mammae like the Carin individual sent by Signor Fea. The 
tendency is therefore evidently for the northern specimens to 
have 8 and the southern ones 10 mammae, but unless the exa- 
mination of a much larger series shows this difference to be 
quite constant, I do not think that the two races, otherwise 
apparently identical in every respect, ought to be separated 
specifically, and all Signor Fea’s specimens are therefore now 
placed under one heading. 
