634 Wisconsin Academy of Sciences, Arts, and Letters. 
Palpelius arboreus sp. nov. 
This is a medium-sized dark species with a black fringe 
linder the patella and tibia of the first leg. 
A Length 6.8 mm. Legs 1342, first and second a little the 
stoutest. 
The sides of the cephalothorax are nearly parallel, the wid¬ 
est point being just behind the dorsal eyes from which the 
thoracic part falls steeply. The front eyes form a straight 
row, the lateral being more than half as large as the middle 
eyes, and separated from them. The second row is nearer the 
third than the first. The third row is scarcely narrower than 
the cephalothorax. 
The tibia of the palpus is about as long as the tarsus. The 
falx has one tooth on the lower margin. The upper margin 
has two, one longer than the other, not quite opposite the one 
below. The spines are long, the first and second legs having 
3-3 under the tibia and 2-2 under the metatarsus, besides lat¬ 
eral spines on both joints. The third and fourth legs have 
strong and numerous spines, there being a circle of five on 
each metatarsus. 
Our specimens are somewhat rubbed. The cephalothorax 
is dark, the cephalic plate being black, with patches of red 
hairs along the sides, white hairs on the middle, and rings of 
red hairs around the front eyes. There is a tuft of long white 
hairs on the middle of the clypeus. The abdomen, which, 
under alcohol, is pale with brown chevrons, when dry shows a 
covering of yellow hairs and a good many dark brown streaks 
which form indistinct transverse bands. Low down on each 
side, at the posterior end, is a large spot of red hairs. The 
falces are dark red. The palpus is reddish with a pale spot at 
the end of the tarsus. The legs are light brown and have the 
patella and tibia, in the first and second pairs, darkened and 
bearing a fringe of black hairs below. We have two males. 
Palpelius albofasciatus sp. nov. 
A medium-sized species with a conspicuous transverse white 
band, edged with black, on the abdomen. 
