1118 The American Naturalist. [December, 
ventral surface pale yellowish or nearly white. Head and antenne 
dark. Second and third segments bright yellow, and forming a con- 
spicuous collar. 
Length 25-30 mm., width 2°5 mm., dorso-ventral diameter 3 mm. 
Segments 48-50. 
Locality: Not rare in Western Liberia; Monrovia, Muhlenburg 
Mission, and Mt. Coffee. I have examined about 40 mature specimens. 
The females seem to be somewhat more numerous than the males. 
The above description may be taken as somewhat generic, at least. 
for the Liberian species. In the remaining two only characters differ- 
ing from those of St. bellus are given. 
Stemmatoiulus pencillatus sp. n. 
Plate XLIII, figs. 32-46. 
Body slender, not so distinctly fusiform as in the last species. 
.Segments with setiferotis punctations inconspicuous; dorsal suture 
and sulcus more distinct and notched posteriorly; the impressed lines 
more distinct and the surface of the segment between somewhat more 
convex than in St. bellus. 
Second male legs with a pencil of long hairs rising from the third 
joint, where in St. bellus there is a cluster of shorter hairs. On the 
fourth joint is a pectinate row of curved spines in, St. bellus represented 
by a cluster at apex. 
3-5 of males more strongly crassate haat in St. bellus. 
Copulatory legs quite distinct in form, see figures. 
Colors in general similar to that of St. bellus, but not so bright, 
mottled horn-brown. Median stripe broader, but rather indistinct, red- 
dish-brown ; spots about the pores very indistinct, horn-color, lighter 
than the surrounding surface. The dark color ceases at about the 
middle of the side, but not very constantly or abruptly. Immediately 
below there may be a row of dull orange spots, or the whole lower 
lateral surface may be a mottled light horn-brown. Feet whitish, 
antennee dark, except the last joint. Second and third segments not 
yellow, but rather darker than the others; the first segment is occasion- 
ally yellowish. 
Length of male 19 mm., width, 1:25 mm.; female 22 mm. and 1°75 
mm., there being a much more noticeable disparity in size than in the 
preceeding species. Segments 50-53. 
` Locality: A rare species in Western Liberia; Mt. Coffee and Muh- 
lenburg Mission. 
