486 Wisconsin Academy of Sciences, Arts and Letters. 
narrowing to a long point between front coxse, which are separ¬ 
ated by width of labium. Labium nearly as wide as long. 
Lower edge of falx with a compound tooth. Legs short, first 
pair stoutest, especially in male. Femoral spines poorly devel¬ 
oped. Tibia and metatarsus I each with 2-2 below. 
METACYRBA T^ENIOLA H. 1845. 
Plate XXXIX, figs. 5—5a. Plate XL, fig. 4. 
1845. Attus t^niola H., Jour. Bost. Soc. Nat. Hist., Y. 
1875. Attus t^niola H., Occ. Pap. Bost. Soc. Nat. Hist., II, p. 56. 
1888. Cybba t^eniola P., Wis. Acad. Sciences, Arts and Letters, VII, 
N. A. Att., p. 75. 
1901. Metacybba t^eniola F. O. P. C., Biol. Cent. Am. Arachn., Aran., 
II, p. 252. 
1904. Metacybba simllis B., Proc. Cal. Acad. Sci., 3rd Series, III, 13, 
p. 360. 
Length, $ 4-7 mm. $ 6-9 mm., largest in the south. Legs, 
$ 2 4123, first pair much the stoutest, especially in males, 
tibia and patella, in male, with a short fringe of hairs. Spines, 
S 2 , tib. and met. I 2-2 below, tib. II 1 below, nearer dis¬ 
tal than proximal end, met. II, below, with a pair and one far¬ 
ther back, or sometimes with only two serially. In one example 
there is a lateral spine on tibia I. There are no developed spines 
on femur I. 
The integument is black with a thin covering of short yellow 
and white hairs. The cephalothorax has a white line around 
the margin, and the abdomen has two lines of white hairs, more 
or less broken into abbreviated bars, which become oblique in 
the hinder half. In similis B., which we believe to be identical 
with tseniola, these lines are not broken. The very narrow cly- 
peus has a line of yellow hairs under the eyes and a short yellow 
fringe, with a black space between. The short and vertical 
falces are black. The first legs excepting the two distal joints, 
and the femora of the other legs, are black or sometimes (espec¬ 
ially in the female), brown, the other joints being much lighter. 
The fringe on the first leg is dark brown. 
