Peckham—Revision of the Attidce of North America. 399 
thorax is black, and the bands on the abdomen are united to 
form one wide stripe, although this is often divided by a line 
of lighter metallic scales, most easily seen when the spider is 
under alcohol. This band is notched on the outer edges by 
three pairs of red or white spots. Both sexes have a white 
basal band and white diagonals on the sides. The red color 
may be very rich and bright or may be dull, even fading to 
brown in old specimens. 
The palpus, in the male, is conspicuously marked above by a 
band of snow-white scales which reaches the distal end of the 
tarsus. The first legs have alternate bunches of black and white 
hairs but the fringe is not marked. 
One of the most characteristic things about this species, in 
the males, is the long first legs. The first exceeds the second 
by the distal joints and part of the tibia. The black cephalo- 
thorax, in combination with the wide black region on the mid¬ 
dle of the abdomen, is enough to distinguish clarus among the 
red males. 
Mr. Emerton has this species from various parts of Mass¬ 
achusetts; from Mt. Washington and Dublin, IT. H., and from 
New Haven, Conn. Mr. Banks has specimens from New Jer¬ 
sey, Virginia, Alabama, Enterprise, Fla., and Texas. We have 
it from several of these places and also from Linville, N. C., 
Lenoir, Tenn., eastern Nebraska, Manhattan, Kansas, Colum¬ 
bia, Mo., and Salem, Oregon. P. minutus B., which we have 
examined, and belive to be a synonym, comes from near Ith¬ 
aca, N. Y., and Olympia, Washington. 
PHIDIPPUS COLORADENSIS THORELL. 1877. 
1877. Phidippus co:loradensis Th. $, Bull. U. S. Geol. Survey, Article 
XV, p. 523. 
Length, $ 13 mm., $ 12.5 mm. Legs, $ 1423, 2 4123, 
first pair enlarged and fringed in the male. Outer corner of 
maxilla with hook-like apophysis. 
Excepting for its greater size, the male of this species is al- 
