Pectiham—Revision of the Attidce of North America. 385 
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Sides of head enlarged to form tubercles; first leg heavily 
fringed with yellow hairs and ornamented, on up¬ 
per side of femur, by a long pencil of stiff dark 
hairs ....... arizonensis 
No tubercles nor yellow fringes . 20 
Small yellow spiders (6-7 mm.) with two dark bands dot¬ 
ted with white on abdomen (this species looks like 
faded specimens of McCookii but the palpus has the 
tube longer and narrower and there is no rugose part 
at the end of the bulb) . plus 
Body not yellow. 21 
Fringe on first leg all brown, found on upper side of femur 
and below femur patella and tibia . octopunctatus 
Fringe on first leg not all brown..... 22 
Cephalic plate with ridges of rusty red hairs . 23 
Cephalic plate without ridges of hairs. 24 
Cephalothorax dark spotted with white; falces with long 
white hairs covering front faces; femur of first leg 
with crest of hairs above and enlarged plate below 
Putnamii (in part) 
Cephalothorax with uniform covering of white hairs; 
falces with white hairs cut squarely off halfway down; 
femur of first leg with a bunch of hairs at distal end 
above and a heavy fringe below . carolinensis 
Cephalothorax with uniform covering of gray hairs.. purpuratus 
Cephalothorax dark with wide white bands on sides .... otiosus 
Key to Phidippus Females. 
( Abdomen red or marked with red*. 2 
1 j Abdomen black marked with white. 18 
( Abdomen brown, gray, yellow or spotted . 21 
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Cephalic plate with two black patches between which the 
color is orange or red; abdomen with seven spots red, 
^ edged with black. A large hairy species from Florida 
and Texas .. mincatus 
l Marking unlike that of mineatus. 3 
f Cephalothorax red above (clarus, cardinalis, McCookii, 
insolens, ardens, Whitmanii, cocciheus, femoratus) ... 4 
! Cephalothorax black or dark covered with inconspicuous 
i brown, black or gray hairs (formosus, Johnsonii, 
! coloradensis, ardens . 13 
l Cephalothorax dark with white hairs or bands on sides.... 16 
4 ( Abdomen marked with black. 5 
( Abdomen all red or red marked with white. 9 
5 ( Abdomen with two black bands. 6 
( Abdomen with one black band .*.. 8 
* Cambridge figures arizonensis bright red, but we have classed it with the 
yellow spiders because he describes it as yellow. 
