482 
APPENDIX. 
Longitudo ab apice rostri ad caudso basin 3 unc. 3 lln. 
„ ,, caudai * . , .1 10 
„ tarsi digitorumque . . 0 6 
„ ab apice rostri ad basin auris 0 10 
Habitat, Fernando Po^ West Africa. 
“This species somewhat resembles the Sorex mrius of Smuts, 
but is of a deeper hue. The upper parts of the body are of a 
deep brown colour, rather indistinctly variegated with greyish; 
the body beneath is grey, but slightly washed, as it were, with 
dirty yellow. The ears are distinct, that is, not hidden by the 
fur, as in >5^. tetragonnruSy and its allies, and the tail has long 
bristly hairs interspersed with the short adpressed fur, as in the 
subgenus Crocidura of Wagler. 
Orderly. GLIRES. 
Family I. Muhid^. 
Mus Alleni. (Waterhouse, in Proc. Zool. Soc. Lond., 1837.) 
Mus. auribus parvnlis, cauda corpore cum capite, longiore, 
corpore supra nigrescenti-fusco, subtus cinereo; pedibus ob- 
scuris. 
Longitudo ab apice rostri ad caudm basin . 1 unc. 9^ lin. 
„ cauda? , . .1 11 
„ iiostri ad basin auris . 0 7 
„ tarsi digitorumque .0 
„ auris ... 0 3 
Habitat. Fernando Po, West Africa. 
“This species is less than the harvest mouse {Mus messorius), 
and of a deeper colour than the common mouse {Mm mmculus), 
beiug in fact almost black. The ears are smaller in proportion, 
and more distinctly clothed with hairs; the tarsi are covered 
with blackish hairs above; the toes are dirty white. 
Mr. Waterhouse named this species after Captain (then Lieu- 
tenant) W. Allen, R.N., who procured it on his first visit to the 
Niger and Fernando Po. 
