Peckkam—Revision of the Attidce of North America. 403 
We have two males and three nearly mature females. 
In the male the cephalothorax is black with a covering of 
coarse brownish hairs which grow long about the front part of 
the head. The falces are iridescent bluish green. The abdo¬ 
men is bright red with two longitudinal black bands which are 
broken behind by two pairs of white bars. These bands do not 
reach the front end, and in one specimen they do not meet 
behind, but in the other they form a solid black region to a point 
a little in front of the white bars. In the California example 
there is a narrow white band, scarcely visible from above, 
around the front and sides. The legs are dark, the first and sec¬ 
ond pairs almost black. The first pair is heavily fringed, the 
hairs being alternately white and black, or tawny brown. They 
are dark on the femur and tibia and white on the patella, while 
on the distal joints they are white at the proximal and dark at 
the distal ends. The femur has, above, white hairs at the prox¬ 
imal, and dark at the distal end. The tibia is black and irides¬ 
cent. The palpus has white scales and hairs, above, on the fe¬ 
mur, patella and tibia. 
So far as the abdomen is concerned the female closely resem¬ 
bles the male, although the long point between the two black 
bands is white instead of red. The black bands may or may 
not meet behind. The cephalothorax has bright red hairs on 
the front of the cephalic plate, a wide white crescent which 
curves forward from one dorsal eye to the other and a dark red 
band behind this. The sides and back are covered with whitish 
hairs. The clypeus is snowy white. 
We have one male from California, and in the Cambridge 
museum collection are three young females and one male from 
The Dalles, Oregon. 
The two black bands on the abdomen are usually sufficient 
to distinguish the male of californicus from Johnsonii, but some 
examples of the latter species are marked in the same way. 
More constant differences are the shape of the cephalothorax, 
which in calif ornicus is nearly circular, being only one milli¬ 
meter longer than wide, while in Johnsonii it has a less rounded 
appearance, being, in fact, nearly two millimeters longer than 
28— S. & A. 
