70 
Psyche 
[June 
parallel to the cymbium, bulb small, not extending- onto 
the tibia, embolus a slender curved black spine at the tip 
of the bulb ; both bulb and embolus may be somewhat dis- 
torted. 
Female. Length, 4.4 mm., ceph. 2.0 mm. long, 1.6 mm. 
wide, abd. 2.6 mm. long, 1.6 mm. wide. 
Cephalo thorax the same as in the male, except that the 
recurved transverse bar of white scales is much heavier 
and the lateral stripe of white scales is quite short, a 
clavate bristle below the eyes of the second row; eyes 
same as in the male ; clypeus the same as the male with 
a fringe of white hairs on the margin; mandibles dark 
brown, with white hairs, vertical, fang groove transverse, 
lower margin with a fissident tooth; labium and maxiUce 
same as in the male, but no lobe on the upper outer 
angle ; sternum dark brown, all coxae pale ; abdomen oval, 
dorsum flattened, with a pale median stripe that extends 
just beyond the middle, a dark basal spear-mark, either 
side the dark areas are broken into four dark spots as 
in the male, often with short cross bars of white scales 
separating the dark spots, venter pale with a large dark 
triangle in the center; legs, 1-4-2-3, shorter than in the 
male, I pair not enlarged, brown, tarsus and metatarsus 
pale, femur with a mass of white scales on the sides, 
spines, patella, 0, tibia, ventral, 2-2-2, metatarsus, ven- 
tral, 2-2, II pair, femur brown with long white hairs, 
tibia with a dark ring at the tip, other joints pale, spines, 
patella, 0, tibia, ventral, a prolateral row, 1-1-1, meta- 
tarsus, ventral, 2-2, III and IV pairs, pale with dark 
rings on femora and tibiae, very few spines; epigynum, 
probably recently moulted as the parts are only lightly 
cliitinized, on the anterior half a pair of large oblique 
oval openings, posterior margin deeply notched with a 
pair of small circular hyaline sacs each side. 
Holotype <$ Mexico ; Acapulco, in lagoon on rubber 
trees, 18 December 1944 (S. Jones). Allotype 2 Mexico; 
Acapulco, on rubber trees, 18 December 1944 (S. Jones). 
Paratypes, 2? pullus, Mexico ; Acapulco, on rubber trees, 
18 December 1944 (S. Jones). 
Met aphid ip pits punts is related to Metaphidippus 
