MAMMALS OF LIBERIA 601 
of bushes at the edges of clearings. Miller records two of this species from Mount 
Coffee. 
Lemniscomys striatus striatus (Linné). Striped Grass Mouse 
Mus striatus Linné, Syst. Nat., ed. 10, vol. 1, p. 62, 1758: type locality restricted by Thomas to 
Sierra Leone. 
Size medium, total length about 243 mm., tail 134; a black line from head to base of tail, and 
on each side about six longitudinal broken lines of oblong spots whitish in color, the dorsal rows 
slightly buffy; head and spaces between the white lines brownish, slightly grizzled with gray; 
belly creamy white. 
This is a widespread species in Africa, of which numerous local races are 
recognized, yet the West African form is remarkably like those from East Africa. 
The very short fifth hind toe with a nail instead of a claw is one of the obvious 
external characters of the genus. This mouse seems to be not uncommon about 
the edges of clearings and the borders of the rice fields, but apparently avoids 
forest country. We secured a few specimens on the Du River and at Paiata 
and Gbanga; Biittikofer obtained it on the Junk River and from Cape Mount, 
while Miller records it from Mount Coffee. 
Hybomys univittatus planifrons (Miller). Striped-back Mouse 
Arvicanthis planifrons Miller, Proc. Washington Acad. Sci., vol. 2, p. 641, 1900: Mount Coffee, 
Liberia. 
Size about as in the preceding species, but tail slightly shorter in proportion; a black stripe 
down the back from forehead to root of tail; upper parts of body elsewhere a uniform mixture of 
ochraceous and black, palest on cheeks, becoming richer and more rufous posteriorly; tail with 
minute black hairs; lower surface of body and limbs pale ochraceous. 
This is evidently the West African representative of the more eastern Camer- 
oons species, H. univittatus. Miller has pointed out that the Liberian animal 
differs noticeably in the less bowed profile of the skull, a character that is borne 
out by the small series of additional specimens that we secured on the Du River. 
The coloring also seems much more intense than in the Cameroons animal, 
which has a nearly grayish belly, lacking the rich ochraceous suffusion. We were 
unable to trap any of these, but the natives who brought in the few that we pre- 
served, said they were forest-living. In addition to the two from Mount Coffee 
recorded by Miller, one was secured by Biittikofer at Hill Town. 
Hybomys trivirgatus (Temminck). Three-striped Mouse 
Mus trivirgatus Temminck, Esquisses Zool. sur la Cote de Guiné, p. 159, 1853: Dabacrom, Gold 
Coast. 
Similar to the last but the ground color less rufous, more ochraceous, the back with a median 
black stripe from forehead to root of tail and a second stripe on each side from the shoulder to rump, 
slightly less marked; below grayish white with a faint buffy wash. 
This mouse proves to belong to Hybomys, although on account of the more 
specialized teeth Thomas made it the type of the genus T’ypomys. The middle 
cusp of the upper molars is more beak-like, directed backward, with connecting 
ridges between the laminae. Biittikofer obtained a specimen at Grand Cape 
