Peckkam—Revision of the Attidce of North America. 397 
upper and under sides of the femur and also on the other joints 
are light brown with some white on the tarsi and metartarsi in 
the male. Cardinalis differs from McCookii (males) in having 
the cephalothorax red only on the top while the sides are black; 
McCookii is all red. The palpi are different and will have to be 
the court of last resort. It is true also of the females that the 
drawings of the epigynes must be compared before final conclu¬ 
sion. In females distended with eggs the opening of the epig- 
ynum is squarer and thinner at the edges than in others. 
Keyserling described this species from Massachusetts. Em- 
erton had it from Providence, R. I., and several localities in 
Mass. In our collection from Columbia, Missouri, and Penn¬ 
sylvania. 
PHIDIPPUS PIUS SCH. 1905. 
Plate XXIX, figs. 8—8b. 
1905. Phidippus pius Scheffer d $, Industrialist, Vol. 31, No. 28, Ad¬ 
ditions to List of Kansas Spiders, p. 6. 
Length, S 6-7 mm., 2 9-10 mm. Legs, S 1423, 2 4123, 
nearly equal in thickness. 
The color is yellow, pale in the female, deepening to orange 
in the male, the cephalic plate with a deeper tinge owing to a 
darkening of the integument, and the abdomen marked in the 
posterior half by two dark bands dotted with white. There are 
no bands on the front and sides. The clypeus is covered with 
yellow or reddish hairs, and the falces are light yellowish-brown, 
without iridescence. In the female the palpi are light with 
yellowish and white hairs, and the legs are pale yellow and un¬ 
marked. In the male the palpus has the femur and patella 
light and the other joints dark with white hairs and the legs 
are light yellowish-brown, the first pair with a short, thin fringe 
of curly white hairs on femur patella and tibia. In one speci¬ 
men the first and second pairs have a longitudinal black streak 
on the front face of the femur and large black spots on the 
front faces of the patella and tibia, while the metatarsus and 
