Peckham—Revision of the Attidce of North America. 581 
lowed by two large white spots with black spots behind them, 
and farther back, a series of indistinct whitish chevrons, with a 
second pair of black spots a little in front of the spinnerets. The 
example which we described as Eris nervosus was rubbed on the 
middle of the abdomen. 
The falces of the male are similar to those of Bettini, but 
smaller. The femur of the first leg is dark, with the rest of the 
leg lighter, although darkened at the ends of the joints, the pa¬ 
tella and tibia being sometimes marked by a dark line. The 
other legs are lighter, sometimes tinged with red, and sometimes 
darkened at the ends of the joints. In the female the legs are 
more distinctly banded. 
Mr. Emerton saw mature examples of this species ballooning 
on October fifteenth, near Boston. 
It is found in Maine, (Britcher) ; Massachusetts, Connecti¬ 
cut, (Emerton) ; Hew York, (Long Island, Banks) ; Virginia; 
and has lately been taken in Chicago, Illinois, by Mr. W. H. 
Wright. 
We have sent the type of nervosus to Mr. Emerton and he 
agrees with us that his terrestis is the same species. 
ZYGOBALLUS RUFIPES P. 1885. 
1885. Z. rufipes P. <£, Proc. Nat. Hist. Soc. Wis., Dec., 1885, p. 82. 
1901. Z. rufipes F. O. P. C. <$, Biol. Cent. Am., Arach., Aran., II, p. 291. 
Length, $ 3-4.5 mm., 9 5 mm. Legs, $ 1423, 9 4123, 
femur I enlarged. Spines, $ tib. I 3-3, met. I 2-2, tib. II 1 
pair and 2 serially below, with 1 anterior lateral, met. II 
2-2. $ like $ except that it lacks the anterior lateral on tib. 
II. 
In both sexes the cephalothorax is dark brown with a thin 
covering of white scales. The abdomen, in the male, is bronze- 
brown with basal and two oblique bands on each side, of irides¬ 
cent white scales. In the female the ground color is lighter, not 
iridescent, and is covered with whitish scales which thicken to 
form bands like those of the male, but less distinct. Down the 
middle is a pattern of indistinct chevrons. The falces and cly- 
