228 BULLETIN OF WISCONSIN NATURAL HISTORY SOCIETY. VQL. 1, NO. 4. 
with a thin fringe of white hairs. The patella is as long as the 
tibia, and both of these joints have a thin fringe of brown hairs 
on the inner side. The other legs are yellow. 
One female from Ceylon, sent to us by Rev. D. P. Cambridge. 
Tacuna, gen. nov. 
PI. II, figs. 4-4b. 
This genus differs from Rhcnc in having the cephalothorax 
low and flat, and the quadrangle of the eyes only a quarter wider 
than long. In Iruro it is twice as wide as long. 
The cephalothorax is low and flat, and is as wide as long, the 
widest point being at the dorsal eyes. The thoracic 'part is trun- 
cated, and the sides are almost vertical. The quadrangle of the 
eyes occupies two-thirds of the cephalothorax, is one-fourth 
wider than long, and is very much wider behind than in front. 
The first row of eyes is very slightly bent downward. The mid- 
dle eyes are close together and are about twice as large as the 
lateral, which are slightly separated from them. The second 
row is nearer the first than the third. The third row is nearly 
a^ wide as the cephalothorax. The relative length of the legs 
is 1423, the first being much the longest. 
Tacuna dclccta, n. 
PI. II, figs. 4:-4c. 
Small brown spiders with the tibia of the first leg nearly as 
v.ide as long, and bearing a stiff' ridge of hairs. Metatarsus and 
tarsus of the first leg very slender. 
cf . Length, 3 mm. Legs, 14<?o, the first much the longest, 
with the femur and tibia enlarged. 
The whole spider is brown, the cephalothorax being much 
darker than the abdomen. It seems to have been covered with 
white hairs, but in our single specimen these are nearly all rubbed 
away excepting on the sides of the cephalothorax, where they 
grow rather thinly, with the points directed upward. On the 
abdomen are three pairs of black dots. The first leg is much 
enlarged. There is nothing conspicuous on the femur and pa- 
tella, but on the under side of the tibia there is a stiff spiny 
ridge of black hairs. The metatarsus and tarsus are very slender. 
All the legs are yellowish brown. The falces project very 
slightly forward, and are delicate and tapering, with rather long 
fangs, and toothed apophyses on the inner sides. The labium 
is wide and the maxillae are rounded. 
We have one male from Rio Janeiro, sent to us by Mr. Moenk- 
haus. 
