90 
Psyche 
[June 
palpus, and both male and female have five teeth on the 
lower margin of the fang groove. The male of Parawixia 
has but one bristle on the patella of the male palpus, and 
the lower margin of the fang groove has but three teeth. 
McCook does not state the number of teeth on the fang 
groove and he evidently placed the species in the genus 
Marxia because of the abdominal tubercles. He does de- 
scribe the cephalothorax rather definitely, as “ divided 
into two low ridges by a lateral depression passing just 
behind the ocular quad, giving the head a lumpy appear- 
ance.” These two low elevations just posterior to the 
eyes are even more conspicuous in the male than in the 
female but until the number of teeth on the fang groove 
on the type specimen is known, the two can best be con- 
sidered as separate species. 
? Mona Island, August 1944 (Beatty). 
Genus Wixia O.P. -Cambridge 1882 
Wixia serrallesi spec. nov. 
Figures 2, 3 
Male. Length, 6.6 mm., ceph. 3.1 mm. long, 3.0 mm. 
wide, abd. 3.6 mm. long, 2.8 mm. wide. 
Cephalothorax brown, with a broad pale median stripe 
from the lateral eyes to the posterior margin, anterior 
margin shaded with brown and a mass of white hairs pos- 
terior to the lateral eyes, a narrow marginal pale stripe, 
anterior margin about half the greatest width, sides 
evenly rounded, eye area carried foreward, cephalothorax 
rather flat, thoracic groove long and deep; eyes in three 
groups, anterior row strongly recurved, a.m.e. largest of 
the eight, convex, separated by about a diameter, p.m.e. 
slightly smaller than the a.m.e., separated by almost two 
diameters, a short bristle between each a.m.e. and p.m.e., 
lateral eyes small, subequal, on a common tubercle, a long 
bristle anterior and another posterior to the tubercle; 
quadrangle of median eyes slightly narrower behind and 
not as high as wide; clypeus below a.m.e. less than a 
diameter of a.m.e. ; mandibles dark brown, vertical, small, 
cone-shaped, fang groove oblique, four teeth on the upper 
margin, the second tooth from base of the fang the small- 
