Dec., 1885.] 
HISTORY SOCIETY OF WISCONSIN. 
81 
four pairs, those on the third and fourth pairs being weaker than 
those on the first and second. The spines on the metatarsi of 
the fourth pair extend to the base. 
The abdomen is long, slender, and pointed. 
9- Total length 11 mm. Width of abdomen 2.7 mm. 
Cephalothorax: length 4.1 mm; width 3 mm; height 1.4 mm. 
Legs 9.6, 7.4, 6.8, 9.2. Pat. + tib. I 4.2; pat. + tib. Ill 
2.5; pat. tib. IV 3.9; metat. + tar. IV 2.9. 
In shape the 9 is like the i . 
Coloration. $ . 9 . The cephalothorax is testaceous, vary¬ 
ing in color from pale to dark brown, but always darkest in the 
eye-region. A black band includes all the eyes, extending 
around three sides of the cephalic part, and between the dorsal 
eyes is a dark spot. There are sometimes a few white and red 
hairs on the thoracic part. The abdomen has two reddish longi- 
tudinal bands, which are sometimes continuous at the base, 
between which is a central white or pale band dotted with 
brown. The sides are pale streaked with brown. The face and 
falces are dark reddish brown; the palpus is brownish, with 
blown and white hairs; the mouthparts are usually dark brown, 
s °metimes pale; the sternum is pale, as is also the venter, the 
latter having sometimes a dark central band and a dark spot 
near the spinnerets. The legs vary in color from pale to dark 
blown, the first and second pairs being darker than the third and 
fourth; all are tipped with black. 
Habitat. Central America. 
Gen. nov. Zygoballus. 
Cephalothorax but little longer than wide, high, plane, widest 
°Pposite dorsal eyes, sides nearly vertical, behind truncated or 
olio wed; cephalic part occupying ^5 of the cephalothorax, 
slightly inclined forward; thoracic part falling steeply from 
dorsal eyes. 
Quadrangle of eyes about J /5 wider than long, a little wider 
e bind than in front; anterior row visible from above, nearly 
