PHIDIPPUS. 
1. Apical spine of palpal bulb broader and bifid at its apex. 
Tibial spur strongly curved forwards and downwards . 
2. Apical spine of palpal bulb narrower, shorter, and aculeate at 
its apex. ‘Tibial spur straight (see Peckham’s figure). Legs 
i. and 11. with black hairs, except patella and protarsus, which 
are clothed with white hairs . - + . 
6. Carapace, legs, and abdomen entirely brown, the latter with some 
indistinct groups of a few white hairs dorsally. Tarsus of 
palpus clothed with orange-yellow scales and yellow hairs above. 
Mandibles brown. Apical spine of palpal bulb broad and 
strongly curved, falciform at its apex 
66. Carapace black, with a transverse sinuous white band behind the 
cephalic area. Legs rufous, barred with black; femur, tibia, and 
apex of protarsus i. clothed with long black hairs, the patella with 
a long brush of snow-white hairs. Mandibles blue, iridescent 
II. Mandibles with two teeth only, one above and one below. Legs i. and 
ul. clothed with long black hairs. Mandibles green, with violet 
reflections. Spine at apex of the palpal bulb very short, sinuous, with 
a broad rounded basal portion 
Females. 
A. Abdomen not unicolorous, but with an anterior marginal band, a central 
triangular spot, an obliquely curved line, and a smaller spot on each 
side towards the spinners. 
I. Legs i. and ii. clothed with black or brown hairs, in addition to the 
grey pubescence. 
aa. Carapace almost entirely black or purple-brown, clothed with grey 
pubescence. 
a. Vulva notched in the middle of the posterior margin, with the 
anterior bilobate cavity narrow and more remote from the 
posterior margin. Palpi clothed with long black hairs. 
(Mandibles metallic green, their base and the clypeus fringed 
with white hairs. Abdomen dull red, clothed with grey hairs, 
having a central dorsal posterior black band, an anterior white 
marginal band, and a central white dorsal spot.) 
Vulva also notched in the middle of the posterior margin, but 
with a deep concavity nearer to the posterior margin, having 
a short, narrow, central, anterior, longitudinal carina. Palpi 
clothed with long silver-grey hairs. 
(Mandibles metallic green, their base and the clypeus fringed 
with grey hairs. Abdomen deep purple-brown, with an anterior 
marginal band of silvery-grey hairs followed by two indistinct 
lateral pale spots; and also with a central dorsal triangular 
spot, followed on each side by a transverse spot and a smaller 
BIOL. CENTR.-AMER., Arachn. Aran., Vol. II., November 1901. 
281 
albulatus, sp. n. 
mexicanus, Peckh, 
brunneus, sp. n. 
howardi, Peckh. 
bidentatus, sp. n. 
carneus, Peckh. 
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