68 
Psyche 
[June 
tlie male ; eyes the same as in the male ; clypeus as in the 
male, with a mass of white hairs beneath the a.l.e. and a 
fringe of white hairs on the margin; mandibles dark 
brown, basal half with a mass of white hairs, vertical, not 
narrowed at the base as in the male, fang groove almost 
horizontal, npper margin with a scopnla of stiff hairs, 
lower margin with a sharp tooth; labium dark brown, 
longer than wide ; no lobe on the maxillae ; sternum as in 
the male; abdomen pale, with a median dark stripe, 
heaviest on the posterior two-thirds, with the lateral mar- 
gins broken by three pairs of spots covered with white 
hairs, the anterior pair at the first muscle spots, venter 
pale; legs , 1 -4-2-3, III left missing, I pair slightly en- 
larged, dark with no rings, other pairs paler, III and TV 
pairs with faint dark rings at the ends of each joint, 
spines as in the male; epigynum , area wider than long, 
with a pair of oval, slightly oblique openings at the an- 
terior portion, the median area convex and the posterior 
margin deeply edentate. 
Holotype <$ Mexico; Acapulco, 19 December 1944 (S. 
Jones). Allotype Mexico ; Acapulco, 19 December 1944 
($. Jones). 
Metaphidippus grains is related to Metaphidippus 
lanceolatus F.O.P.- Cambridge, known only from the male, 
from Mexico and Guatemala, and also found by Dr. 
Chickering at Boquete, Pan. Rep., and identified by Mr. 
Banks from Costa Rica. Cambridge has figured three 
types of teeth on the fang groove, showing that the teeth 
are very variable in this species. The legs are described 
with dark and pale rings and the abdomen has white 
lateral stripes that meet at the base, the area between 
with paired dark spots. The Acapulco species is larger 
and darker than the specimens of M. lanceolatus from 
Costa Rica. 
Metaphidippus purus spec. nov. 
Figures 10, 14 
Male. Length, 3.6 mm., ceph. 1.6 mm. long, 1.6 mm. 
wide, abd. 2.0 mm. long, 1.1 mm. wide, mand. 1.0 mm. long. 
C ephalothorax a deep mahogany-brown, eyes on black 
