404 Wisconsin Academy of Sciences, Arts and Letters. 
wide, and the relative length of the first leg which in califor- 
nicns exceeds the second by the distal joints and part of the 
tibia, while in Johnsonii it is longer by only the tarsus and a 
part of the metatarsus. 
PHIDIPPUS JOHNSONII P. 1883. 
Plate XXXI, figs. 1—lj. 
1883. Atttjs johnsonii P. £ $, New or little known Attidse, p. 22. 
1885. Phidippus bicolor K. <-f, Ver. z. b. Gesell. VI, p. 496. 
1888. Phidippus johnsonii P. $, Wis. Acad. Sciences, Arts and Let¬ 
ters, VII, N. A. Att., p. 20. 
1898. Phidippus arizonensis B. <j>, Proc. Cal. Acad. Sciences, 3rd 
Series, I, 7, p. 279. 
1901. Phidippus johnsonii, P. g $, Wis. Acad. Sciences, Arts and Let¬ 
ters, XIII, p. 285 and p. 287. 
Length, $ 7.5-11 mm., 2 ll-13mm. Legs $ 1423 or 4123, 
2 4123, first pair enlarged and fringed in the male. 
The male of this species presents a good deal of variation in 
size and in the bulb of the palpus, so much so that we for a time 
thought that the larger form was a distinct species. The ceph- 
alothorax is black and usually has a uniform inconspicuous 
covering of brownish hairs, while the abdomen is rich red, show¬ 
ing infrequently, a narrow white basal band, but lacking diag¬ 
onal streaks on the sides. Some examples show, especially under 
alcohol, two longitudinal black bands, crossed by two pairs of 
red bars on the posterior dorsum. We have three males from 
Washington, with the relative length of the legs 4123, in which 
these bands are distinct, almost like those of californicus, and 
in one of the three there are bright red hairs on the cephalothor- 
ax, around and between the dorsal eyes. The legs are dark, some¬ 
times nearly black, those of the first pair fringed; the femur 
has black hairs below, white scales on the inner face, white hairs 
toward the proximal end above, and white hairs mingled with 
black ones, giving a gray appearance at the distal end below. 
There are white hairs under the patella and the proximal ends 
