614 Wisconsin Academy of Sciences Arts and Letters. 
Booseveltia gen. nov. 
The cephalothorax is high, very long and wedge-shaped, the 
cephalic part being narrow and not inclined while the thoracic 
widens out and falls in a gradual slope, The quadrangle of 
the eyes is a little wider behind than in front, is one-fourth 
wider than long and occupies two-fifths of the cephalothorax. 
There are no tubercles nor depressions. The front eyes are 
slightly separated and form a curved row, the middle being 
nearly twice as large as the lateral. The second row is half¬ 
way between the others, and the third is nearly as wide as the 
cephalothorax. The falces project but are not horizontal. The 
upper margin is rounded out so as slightly to overhang the 
lower, and has one short, round tooth and a second very tiny 
one between this and the fang. The ridge on the lower mar¬ 
gin is not bifid, having only a point at one comer. The ster¬ 
num is oval, truncated in front. The first coxse are separated 
by the width of the labium, which is longer than wide. The 
first and second legs have three pairs of spines under the tibia 
and two pairs under the metatarsus but lack lateral spines, 
while the posterior legs have three circles on the metatarsi. 
In R. mutilla , the type species, the relative length of the legs 
is 4132, the fourth pair being much the longest. The metatarsi 
are much longer than the tarsi, especially in the third and 
fourth pairs. 
This genus seems to belong near Hasarius. 
Booseveltia mutilla sp. nov. 
9. Length 10 mm. Legs 4132, femur of the first thickened, 
otherwise slender. 
This species looks like some hymencpterous insect and is 
said by Mr. Shelford to mimic a Mutilla. 
Our example is somewhat damaged. The ground color of 
the cephalothorax is dark, the upper surface being covered 
with yellowish-red hairs which run down to form bands on the 
sides and thoracic part. The clypeus is edged with white and 
has a coppery red spot under each of the middle eyes. The 
