Pechham — Spiders of the Family Attidae. 



285 



Key to Xorth axd Cexteal Amekicax Species of the 



Gexus Phidippus. 



MALES. 



Abdomen with a covering of red hairs. 

 Abdomen without red hairs 



f First leg longer than second by tarsus, matatarsus 



! and part of tibia 



1 First leg longer than second by not more than tar- 

 l^ BUS and metatarsus 



\ Length 5-7 mm.; palpus with longitudinal v/hite 



2 

 8 



3 



4: 



a 



} band above; cephaiothorax black muUifoj"mis 



6 ^ 



7 < 



8 



9 



Length about 9 mm.; palpus with longitudinal 

 white band on upper surface of tarsus; ce- 

 phaiothorax 



^ Length about 13 mm.; palpus without white 

 ^ \ band on tarsus; cephaiothorax black 



Falces with fringe of white hairs down outer edge 



Falces without fringe of white hairs 



Long black hairs on first leg and on palpus; entire 



cephaiothorax and abdomen deep red 



First iQg and palpus without noticeable hairs 



Length 10-12 mm.; color of abdomen deep red with- 

 out black bands: cey^halothorax black 



Length 6-8 mm.; color of cephaiothorax and abdomen 

 yellowish-red 



Palpus with snow-white scales; falces dark, iridescent 

 green :•,•••• 



Palpus without white scales; falces brown, not irides- 

 cent 



Abdomen black, with a large triangular white spot 



and one or two pairs of smaller white spots behind. 



Abdomen marked or colored differently from the above 



Cephaiothorax black 



Cephaiothorax with white bands on sides 



f Upper surface of thoracic region black; cephalo- 



j thorax massive and plainly wider than third 



^ j row of eyes; size, 11-15 mm.; first leg at least 



[^ 12 mm 



insolens 



californicus 



Tyrellii 

 5 



ecrrdinalis 

 6 



Jolinsonnii 



7 



rufiis 

 ruber 



9 

 11 



rnorsitan^ 

 10 



vai'legatus 



10 i 



{ Upper surface of thoracic region entirely covered 

 j with white hairs; cephaiothorax massive and 

 ) plainly wider than third row of eyes; size, 

 l^ 11 A mm.; first leg, 16.3 mm ^ rnexicanus 



c i 



I 



White bands on sides of cephaiothorax uniting 

 to form a zig-zag band on upper surface of 

 thoracic region; cephaiothorax not massive 

 and scarcely wider than third row of eyes; 

 size 8 mm.: first leg, 10 mm ^ Hoivardii 



1 Our specimen of rnexicanus is shrunken. Whan fresh it would probably measure 

 15 mm. 



3 In variegatun there is sometimes a little reddish color on the patella of the first 

 leg; inHowardii there is a decided tendency to red on the proximal part9 of all the 

 joints. The femur is dark in both species. 



