MAMMALS OF LIBERIA O71 
number added to the list is in itself proof of the thoroughness with which Biit- 
tikofer and his associates collected. Their work, supplemented by the smaller 
collections made by Currie at Mount Coffee and at various points by British 
officials stationed in Liberia, probably gives a very fair picture of the mammalian 
fauna. Our own work was disappointing. On account of the constant rain, 
trapping for small mammals was difficult, as the bait and traps soon became 
unattractive, and the abundance of ants, which quickly destroyed the bait, 
added to the difficulties. Meat baits were covered with masses of ants in a 
very short time, while such specimens as were taken, were often destroyed 
almost before they could be rescued. Probably many of the small mammals 
are arboreal, thereby avoiding the sodden ground but others are doubtless 
equally ground-living, though seldom making definite runways or else avoiding 
the baits used. Only one, a race of Hylomyscus, appears to be new, and is here 
described. For each species we have given the reference to the original de- 
scription and type locality, then a very brief diagnosis to aid in the identi- 
fication of the different kinds of mammals by persons using the list, and finally 
a brief résumé of what has been published on the species in Liberia, with ad- 
ditional notes made by ourselves. 
INSECTIVORA 
SORICIDAE Shrews 
Sylvisorex megalura (Jentink). Long-tailed Forest Shrew 
Pachyura megalura Jentink, Notes Leyden Mus., vol. 10, p. 48, 1888: Schieffelinsville, Liberia. 
A slender, long-tailed shrew, brownish above, gray below; there are four unicuspid teeth be- 
hind the large two-cusped upper incisor; tail without prominent bristly hairs. 
This species was described as a Pachyura, and in current lists is retained 
in that genus, since no further specimens seem to have been secured beyond 
the type described by Jentink. We secured two others, one on the Du River 
and a second at Betala, both of which were brought in by the natives. One, 
an adult female, measures: total length 145 mm., tail 78, hind foot 16.5, ear, 9; 
it contained, July 30, two large embryos. The additional upper unicuspid 
tooth distinguishes it at once from the following species, while from S. gemmeus 
irene of the Congo region it is easily separated by its smoky brown instead 
of russet color. 
Crocidura muricauda (Miller). Mouse-tailed White-toothed Shrew 
Myosorex muricauda Miller, Proc. Washington Acad. Sci., vol. 2, p. 645, 1900: Mount Coffee, 
Liberia. 
Slender and long-tailed, much as in the preceding species, but slaty gray above, pale below; 
three unicuspid teeth behind the first two-cusped upper incisor; the tail with a few short, scattered 
bristle hairs. 
Hollister has shown that this species, described as Myosorex, is really a 
member of the genus Crocidura, in which the tail is unusually long for this 
ground-living group; he suggests that it may be closely related to the Congo 
