HORN EXPEDITION—MURIDS. 
405 
Mus hermannsbupgensis, sp. nov. Fig. 5, a—f. 
Size a little smaller than Alus /nusculus ; fur soft, with longer hairs; general 
color warm brown, clai’ker on the back, becoming lighter on the sides where it. 
merges into yellow; the hairs dark grey at the base; color lielow the eye and ear 
somewhat paler than the body ; under parts white, the bases of the hairs pale grey. 
Ears large, grey within, well clothed wit h whitish hairs, laid forward they reach 
the posterior third or centre of the eye; front of fore and hind limbs yellow ; feet 
pale yellow. Tail longer than the head ami body ; uniform brownish-grey above, 
sides and below white ; the hairs short, leaving the scales well exposed, averaging 
eighteen to the centimetre ; mannme, 0'2 = 4. 
Skull of the usual proportions, supraorbital area smooth. The anterior 
zygoma root does not project forward above, and the fi’ont edge is but slightly 
concave. 
Teeth .—The molar series diverge but little posteriorly, running almost 
parallel, and are noticeably worn in the two skulls examined. there is a 
well-marked anterior cusp ; both the inner and outer cusps of the first and second 
laminae are large, more especially the former ones. the antereo-internal cusp 
is very large the second and third lamime are united into an S-like figure, the 
former having three large cusps. 
Palate ridges .—Three predental undivided, five interdental, all interrupted. 
Dimensions. 
A 
B ? 
C 2 
D 2 
E 2 
Head and body 
- 
69'5 
79-0 
78-0 
78-0 
76-0 
Tail - - - - 
- 
80-0 
8o-0 
81-5 
83-0 
80-0 
Length of head 
- 
23-5 
23-0 
24-5 
24-5 
23-5 
Muzzle to ear 
- 
19-0 
19-0 
19-0 
19-7 
190 
Ear - - - - 
- 
11-0 
11-5 
11-0 
12-5 
ll'O 
Forearm and hand - 
- 
18-8 
18-0 
18-0 
19-5 
190 
Hind foot - - - 
- 
17-0 
17-0 
17-6 
17-0 
17-5 
Heel to front of last foot-pad 
- 
8-3 
8-9 
9-0 
8-3 
8-G 
