60 
Psyche 
[ J une 
Keyserling described this species from a single fe- 
male and states that it is 5.2 mm. long. Probably because 
of poor illumination or magnification, be failed to see the 
small scape in the middle of the epigynum. F.O.P.- 
Cambridge had the species from Panama and in the brief 
description mentions that it is 8.5 mm. long. He also 
had the type before him. It is a common species at Barro 
Colorado, Canal Zone, but all specimens seen are about 
5.0-5. 5 mm. long, so that the size mentioned by Cam- 
bridge is probably an error. Such a discrepancy in size 
is often misleading. 
Aranea vesta spec. nov. 
Figures 4, 6 
Female. Length, 5.5 mm., ceph. 2.6 mm., abd. 3.5 mm. 
long, 3.5 mm. wide. 
CepJialothorax dull yellow, paler on cephalic portion, 
anterior margin about half the greatest width, no thora- 
cic groove, a pair of long colorless bristles at the end of 
the cephalic slope ; eyes cover the anterior margin, both 
rows recurved, a.m.e. largest, separated by about a di- 
ameter with a pair of long colorless bristles between, each 
bristle from a distinct base, p.m.e. smaller than a.m.e., 
separated by more than a diameter with one long bristle 
between, lateral eyes subequal and touching; quadrangle 
wider in front and higher than wide; clypeus about a 
radius of a.m.e. with 6 or 8 long bristles on the margin ; 
mandibles dull yellow, vertical, with scattered long color- 
less bristles, no boss, fang groove slightly oblique, upper 
margin with 4 teeth, lower margin with 3 smaller teeth ; 
labium pale brown, wider than long, tip rebordered ; maxi- 
llae pale, twice as long as labium, sides parallel; sternum 
pale, triangular, three-quarters as wide as long, emargin- 
ate opposite the coxae, pointed at the tip, fourth coxae 
almost touching; abdomen as wide as long, but with no 
shoulder angles, a median pale area at the base which 
rapidly spreads to the width of the abdomen, on the dis- 
tal half a median shield-shaped dark area, with emar- 
ginate sides, venter brown with two irregular pale spots 
anterior to the spinnerets; spinnerets dark, closely 
grouped very near the tip; legs, 1-2-4-3, femora dark 
