Peckham—Revision of the Attidce of North America. 389 
FHIDIPPUS AUDAX H. 1844. 
Plate XXIX, figs. 2—2b. 
1844. Attus audax H., Jour. Bost. Soc. Nat. Hist., IV. 
1845. Attus tripunctatus H., Jour. Bost. Soc. Nat. Hist., V. 
1846. In C. Koch’s Die Arachniden, XIII, Phidippus purpurifer p. 127, 
rufimanus p. 132, mundulus p. 137, concinnatus p. 145, and 
possibly others. 
1875. Attus audax H. and Attus tripunctatus H., Occ. Pap. Bost. 
Soc. Nat. Hist., II, p. 50 and p. 58. 
1883. Attus tripunctatus P., New or little known Attidse, p. 33. 
1888. Phiddipus morsitans P. (not morsitans Wlk.), Wis. Acad. 
Sciences, Arts and Letters, VII, N. A. Att., p. 11. 
1891. Phidippus tripunctatus E., Trans. Conn. Acad., VIII, New 
England Attidse, p. 9. 
1901. Phidippus morsitans P., Wis. Acad. Sciences, Arts and Letters, 
XIII, c? p. 285, 2 287. 
We formerly supposed that morsitans Wlk. and variegatus 
C. K. were identical with audax H. 
Length, $ 7-13 mm., $ 8-15 mm. Legs, $ 1423, $ 4123, 
first pair fringed and enlarged in the male. 
Large hairy black spiders. In both sexes the cephalothorax 
is black, the abdomen is also black with many long white hairs, 
a white basal band, and a large more or less triangular white 
spot near the middle; behind are two more pairs of white bars; 
in front and also lower down and further hack are two more 
pairs of indistinct white spots or dots; some specimens have 
traces of oblique side stripes. In the middle of the hack behind 
the large white spot, is a metallic hand. The white spots and 
bars are formed of white scales. The falces are iridescent green, 
all the under parts are black, except two indistinct light lines 
under the abdomen. In young spiders the markings on the 
abdomen are often orange-colored instead of white. The male 
palpus has a white hand. The legs are dark, nearly black at the 
distal ends of the joints. There are fringes most marked on the 
first pair, on the legs, the distal end of the femur, the patella, the 
proximal ends of the metatarsus and tarsus having white hairs 
