580 Wisconsin Academy df Sciences, Arts and Letters. 
broken up into irregular dark and light spots. The femur of 
the first is dark red-brown. The other joints, as w T ell as the 
second and third pairs, are white, while the fourth pair is light 
with the distal ends of the joints darkened. The first, second, 
and third legs occasionally show black longitudinal lines. The 
palpus is white. 
This species is common in the eastern, southern and central 
states. We have it fro^m Maine, Massachusetts, Connecticut, 
New York, North Carolina, Georgia, Florida (Banks), Texas, 
Missouri and Wisconsin. 
. 
ZYGOBALLUS NERYOSUS P. 1888. 
Plate L, figs. 8—8c. Plate LI, fig. 12. 
1888. Eris nervosus P. Wis. Acad. Sciences, Arts and Letters, VII, 
N. A. Att., p. 56. 
1891. Zygoballus TERRESTRis Em. g $., Trans. Conn. Acad. VIII, New 
England Attidae, p. 13. 
Length, $ 3-4.5 mm., 2 3-4 mm. Legs, $ 1423, 2 4123, 
fern. I enlarged. Spines, $ 2 tib. I 3-3, met. I 2-2, tib. II 2 
serially below, and 1 anterior lateral. 
Nervosus is less difficult to distinguish than the other species.' 
The cephalothorax is heavier and wider, with the thoracic slope 
not so steep. The legs are heavier, with shorter joints, the tibia 
of the first, in the male, being only about two and one-half times 
as long as wide. The joints of the palpus, in the male, are also 
shorter and heavier, the patella plainly longer than tfie tibia, 
and each of these joints about as wide as long, while in all the 
other species the patella is plainly longer than wide. 
In both sexes the cephalothorax is brown, thinly covered with 
whitish scales. The narrow clypeus is white. In the male the 
abdomen is brown, slightly metallic, with a very bright white 
basal band extending two-thirds of the way along the sides, a 
nearly longitudinal white bar, edged with black, on each side at 
the posterior end, and a white spot at the spinnerets. The female 
abdomen, of a lighter brown, is marked much like that of Betti- 
ni, with two short curved bands just back of the hasal band, fol- 
