A62 ABBOTT’S KILIMA-NJARO MAMMALS—TRUE. 
Dimensions of the skull, No. 384723 $. * 
Zygomatic breadth ....------.---------------- 22-22 2-22 eee ee eee eee eee eee 15.0 
Length from post. margin of alveolus of incisor to end of palate... .-...----- 12.6 
Length of incisive foramina -.-.--.-.----.----------------+ 2-22 2-22 ee2eee---e- 6.6 
Greatest breadth of incisive foramina taken together ........--....---..----- 2.6 
Length of nasals........------------------ ---+ +--+ ++ +--+ --- 2 222 eee --- 2 =e 1198 
[seb oesce sty Gli ehyeee See Soe ses aaSct bess odes esodeses ses ss- 2.6 
Lenpth’of upper molars --.2--..0-22. 23-20. S520 tees cee eee 4.8 
Length of lower molars ---: ~..----. == --<- «-2 pes S925 os oan geese eee 4.4 
Depth of mandible at coronoid provess --..~+---- ---<--+s---- -s-62-/---0e2 we-e es 
48997. Young. Mount Kilima-Njaro, April 11, 1888, 8,000 feet. (Type.) 
? Mus minimus Peters. 
A single alcoholic specimen belonging to the subgenus Nannomys is in 
the collection. It appears to represent this species, although the dimen- 
sions of the body are not exactly the same. It is not in a good state of 
preservation. I have made the following measurements: 
inm. 
Length of head and body .- -----.-.-.-- --2+ ---- --2---00--2- = 202 Soto nee es one 55.6 
Length of tail vertebre . ... 62 2-.-- ctw - eee ane asa se 45.4 
Length of hind foot (with claw) ------ 4.223222 02 26 0-2-0 ee ee 12.6 
eneth of ear fromthe ocenpultiecac c= a ee = ore = oe eee ae eee 7.0 
19750. Male, adult. Mount Kilima-Njaro, 1889. (Alcoholic.) 
Mus sp. 
There are specimens of two additional species of true rats in the col- 
lection which I have been unable to identify. One species resembles 
an overgrown house mouse, M. musculus. The other is smaller and is 
of a clear-gray color, with a pale yellow lateral line, and the tips of the 
hairs below pure white. The feet are also white and the tail dark and 
almost without hairs. The dimensions of an alcoholic specimen of *his 
latter species are as follows: 
Measurements, g, No. 19760. 
Length of head and body -...---.---------+ ---- 2222 oes ee =e eee 82.8 
Length of tail (with hairs) ..-.--2.<- 2-22. 325 - sem ae eee ee 103. 2 
Length of hind foot (with. claw) ...-..-. -.-.-.-5 222 -- 2-2-2 ones anes =eee 24.49 
Length of; ear from the occiput. 2.2.57 2< se.8 eoaes Bec ee eee ae ee 16.4 
19313. Female. Mount Kilima-Njaro, November 24, 1889, 5,000 feet. (Skin.) 
19714. Male. Mount Kilima-Njaro, November 24, 1889, 5,000 feet. (Skin.) 
19715. Male. Mount Kilima-Njaro, November 10, 1889, 5,000 feet. (Skin. ) 
19760. Male. Mount Kilima-Njaro. (Alcoholic.) 
Dendromys nigrifrons sp. nov. 
The collection contains several specimens of a very small Dendromys, 
which does not appear to have been described hitherto. The most 
striking difference between this animal and the species described by 
Smith and Heuglin consists in the presence of a large black spot on 
the forehead, and I have therefore chosen for it the name of Dendromys 4 
nigrifrons. i 
— 
* The skull is defective below and the total length cannot, therefore, be given. 
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