PETRI'S KEY ITCH. AMERICAS SPIDERS 
217 
chobothria at end of tarsus. 6 at end of metatarsus and 6 at base of tibia, fourth leg 
4 trichobothria at end of tarsus. 4 at end of metatarsus and 4 at base of tibia; 
palpus has a group of 7 trichobothria at base of tibia: claws of legs as figured in 
Plate XXII, fig. 22. 
Colob ix alcohol: Lamina maxillaries and posterior declivity of cephalothorax 
uniformly yellow ; rest of body and legs covered with numerous tubercles looking 
like warts : whole body above and underneath mottled with yellow and brown, but 
colors lighter beneath than above: abdomen extending far behind spinnerets: epi- 
gynum as figured (Plate XXII, fig. 21 . 
Patria: Brazil. 
Collection : A. Petrunkevitch. One mature female found by Prof. 
Moe nkh ans at Poeo Grande, Prov. Sao Paulo, Brazil. 
CLUBIOXIDdE. 
25. Phrurolithus Britcheri sp. nov. 
Plate XXII, Fig. 23. 
Total length, 2.20 mm.: cephalothorax 0.90 long, 0.S0 wide; sternum as broad 
as long (0.60 mm.); legs in order 4123. 
Legs 
Femur 
Pat. -f- Tib. 
Metatar. 
Tarsus 
Total 
I 
0.90 
1.25 
0.75 
0.50 
3.40 
n 
0.S5 
1.00 
0.65 
0.50 
3.00 
m 
0 . 75 
0.85 
0.60 
0.50 
2.70 
IY 
0.95 
1.15 
0.85 
0.60 
3.55 
Integuments clothed with thin hair ; on epi-medial line of each mandible, about one 
third its length from base, a stiff bristle; hair on legs, especially on tibia consider¬ 
ably heavier than on body : epigynum consists of two separate openings, one above 
the other, situated in the plane of symmetry: each opening leads into a separate 
round receptacle by means of a short, curved tube. 
Patria: Onondaga County, New York. 
Collection: American Museum. One mature female from the vicin¬ 
ity of Cayuga Lake, X*. Y., collected by the late H. W. Britcher. 
CTEXIDJE. 
26. Ctenus malvemensis sp. nov. 
Plate XXII, Figs. 24, 25. 
The size of the specimens in my possession varies considerably. The 
largest female measures 2S mm. The following measurements were taken 
from a medium sized female. 
