532 
!Wisconsin Academy of Sciences, Arts and Letters . 
f Palpus with large tibial apophysis, straight on lower edge, 
j rounded above, wider at end than at base; abdomen 
23 ^ with light foliated band outlined in black. Alberta, 
Colorado .. montanus 
l No such apophysis......... 24 
\ Under part of coxae, trochanters and femora of first and 
second legs, and femur of palpus, shiny black, the rest 
of the legs and palpus being light brown; abdomen 
24 dark marked with white; basal and transverse bands 
connected longitudinally. Eastern states and Wiscon¬ 
sin ... borealis 
i. No such contrast... 25 
C Cephalothorax marked with white . 27 
^ ( Cephalothorax not marked with white . 26 
26 
27 
28 
29 
f Cephalothorax red-brown; clypeus white. California ... pacifica* 
! Cephalothorax black; clypeus and hairs around eyes crim¬ 
son; abdomen black with white line, broken behind. 
L British Columbia, Alberta . lagganii 
f Cephalic plate with four white lines; abdomen black with 
J basal band, scalloped border, and angular spot, white. 
j Texas . fallax 
Cephalic plate without these lines . 28 
f Abdomen with two yellowish brown bands, the middle and 
J sides being white; palpus with one short broad tube 
J (unique in Pellenes). California, Texas. limatus 
Abdomen and palpus differing from the above. 29 
f Cephalothorax (dry) with small white spot between dorsal 
eyes; abdomen with middle dorsum yellow; palpus 
with tibial apophysis long, square at end, and bulb 
with angular corner at inner side. Eastern, middle 
and western states and Arizona . . Hoyi 
| Cephalothorax (dr 57 ) with a mark running forward from 
l dorsal eyes; abdomen with median white band .. Cockerellii 
Key to Pellenes Females. 
, C Clypeus marked with white and dark bands . 2 
I Clypeus not banded . 7 
2 J Cephalic plate with one or more white bands . 3 
( Cephalic plate without white bands .. 6 
f Cephalic plate with one central longitudinal white band; 
^ J abdomen with narrow white herring-bone stripe from 
base to apex. California, Texas . limatus 
l Cephalic plate with more than one white band .. 4 
* P. pacifica B. 1904, from San Francisco, was represented by a unique 
male specimen in the rooms of the California Academy, which was lost at 
the time of the fire. It is described as 4 mm. long, cephalothorax dark red- 
brown, a long black fringe over front eyes, clypeus snow-white with white 
scale-like hairs and long white hairs, palpi mottled, abdomen black with 
an oblong oblique white spot on each side near the middle, and behind, on 
the median line, a small white spot followed by two still smaller ones; 
venter pale. The palpus is figured (Proc. Acad. Sci. California, Third Series. 
Zoology. Ill, 13, p. 359, PI. XXXIX, fig. 37). 
