Peckham—Revision of the Attidce of North America. 419 
both. In Putnamii the distal end of the femur of the first is ab¬ 
ruptly narrowed* which is not true of femoratus. The palpi, 
while similar, are distinct. 
PHIDIPPUS ARIZONENSIS P. 1883. 
Plate XXX, fig. 4. 
1883. Attus aeizonensis P. <$, New or little known Attidse, p. 13. 
1888. Phidippus aeizonensis P. Wis. Acad. Sciences, Arts and Let¬ 
ters, VII, N. A. Attidae, p. 18. 
1901. Phidippus aeizonensis P. rf, Wis. Acad. Sciences, Arts and Let¬ 
ters, XIII, p. 286. 
1901. Phidippus tubeeculatus F. O. P. C. <j>, and P. aeizonensis F. 
O. P. C. $, Biol. Cent. Am., Arachn., Aran., II, pp. 283, 
284. 
Not Phidippus arizonensis B. % Proc. Cal. Acad. Sciences, 
3rd Ser. I, 7, p. 279, which is probably Johnsonii. 
Length, 8 9-11 mm., 9 10 mm. Legs, 8 1423, $ 4132, 
first and second pairs fringed in both sexes, but not enlarged. 
Although the male of this species is variable as to color and 
marking it has certain peculiarities which easily distinguish it 
from everything but cruentus, which is not found in the United 
States. These are the heavy fringes of long yellow hairs under 
the first and second legs; a long pencil of stiff dark hairs which 
springs from the upper surface of the femur of the first, at the 
proximal end, curving forwards, and the shape of the cephalo- 
thorax, the front part of which is swollen out on the sides to 
form tubercles. 
Cambridge’s description, made from fresher specimens than 
ours, is as follows: “Carapace with stout conical tubercles at the 
side of the cephalic region, and a pencil of long black hairs above, 
in front of the posterior lateral eyes; black, or dark red-brown, 
clothed with brownish-yellow hairs and scales round the central 
anterior eyes, and black scales and short hairs behind, having a 
patch of white hairs just below and in front of the tubercle, and 
a short broad sulphur-yellow band extending posteriorly from 
29—S. & A. 
