180 Psyche [Sept.-Dee. 
plus patella not as long as femur, tibia and patella each with a 
long dorsal spine, tibial apophysis very near distal end, a black, 
thin leaf-like projection, best seen in a lateral view, palpal organ 
very similar to Thanatidius dubius (Hentz), figured by Bishop 
and Crosby, 1936. 
Allotype, 3 Alabama; Silver Hill, July 1945, (Nelson); 
Additional specimens, 2 Alabama; Silver Hill, July 1945, 
(Nelson); $ Alabama; Silver Hill, June 1945, (Krob). 
The genus was based by Simon on Thomisus ? dubius Hentz 
and Thomisus ? tenuis Hentz, but as Bishop noted in 1924, 
unfortunately, Simon had a specimen of Tetragonophthalma 
undulata Keyserling instead of either of the two Hentz species. 
Bishop also erred in the number of ventral spines on the first 
and second tibiae. There are five pairs of ventral spines with 
the apical pair very short. In the female, the spines are long 
and over-lapping but in the male, the legs are so much longer 
that the spines do not over-lap. In 1924, Bishop in the revision 
of the Pisauridae described females of Thanatidius tenuis from 
Georgia, Florida and Louisiana. 
Family Oxyopim: 
Genus Oxyopes Latreille 1804 
Oxyopes nelsoni spec. nov. 
Figures 5, 7 
Male. Length, 5.0 mm., ceph. 2.4 mm. long, 1.6 mm. wide, 
abd. 2.5 mm. long. 
Cephalothorax yellowish, with wide slightly converging lat- 
eral dark stripes from p.l.e. to posterior margin, median area 
with vague dark marks, eyes surrounded by wide black rings, 
clypeus black, cephalothorax very high, widest between third 
coxae, gradually narrowed anteriorly, thoracic groove long and 
faint, thoracic portion falls abruptly from groove; eyes , an- 
terior row strongly recurved, a.m.e. very small, separated by a 
diameter, a.l.e. about twice the diameter of a.m.e. and separated 
from them by more than two diameters, posterior row longer 
than anterior, strongly procurved, eyes subequal and equi- 
distant; quadrangle formed by a.l.e. and p.m.e. slightly wider 
in front and higher than wide; clypeus not as high as quad- 
rangle of median eyes, slightly convex; mandibles dark, vertical, 
cone-shaped, fang groove very short; labium brown at tip, 
