77 
Dec., 1885.] history society of Wisconsin. 
. i *. . ' l 
Rudra geniculata sp. nov. 
9. Total length 5 mm. Width of abdomen 1.8 mm. 
Cephalothorax: length 2; width 1.5; height 5. 
Legs 5.4, 3.5, 2.7, 3.9. Pat. + tib. I 2.3; pat. + tib. Ill 
1.1; pat. -f- tib. IV 1.5; metat. -f- tar. IV 1.4. 
The cephalothorax is very low and flat, and is a little dilated 
behind the dorsal eyes. The cephalic is not separated from the 
thoracic part; it occupies of the cephalothorax, and does not 
slant forward; its sides are vertical. The thoracic part, which is 
also not inclined, is a little rounded behind and on the sides. 
The quadrangle of the eyes is nearly twice as wide as long, 
and is equally wide in front and behind. The anterior row, 
which is visible from above, is slightly curved downward. The 
middle are a little more than twice as large as the lateral eyes, 
and are subtouching, while the lateral are separated from the 
middle eyes by l /y their own diameter; the lateral are placed 
very little further back than the middle eyes. The eyes of the 
second row are half-way between the dorsal and lateral eyes. 
The dorsal are smaller than the lateral eyes, and are placed just 
within the margin of the cephalothorax; they are much further 
from each other than from the lateral borders. There is no 
frons, and the clypeus is only a line. 
The falces equal, in width, the two middle eyes; they are a 
little longer than the face, parallel and vertical, with the fangs 
weak. 
The maxilhe are a little enlarged and rounded at the ex¬ 
tremity, and parallel. The labium is yi longer than wide, a 
little more than 3^ as long as the maxillae, slightly contracted 
and rounded at the tip. 
The sternum is truncated in front, and rounded behind, and 
is l /i longer than wide. It ] 3 rojects between the anterior coxas, 
which are separated by the width of the labium. 
The relative length of the legs is 1, 4, 2, 3; the first pair is 
much the stoutest, the others being slender. The patella of the 
first is considerably smaller than the femur and tibia. The first 
leg has femoral, tibial and metatarsal spines; those on the femur 
