CHAMBERLIN: THE ARACHNIDA. 185 
Spiracles conspicuously exposed. 
First article of mandible strongly constricted as usual with the 
article abruptly expanded distad of the constriction and with the 
dorsal hump conspicuous. Second article long, moderately curved 
ventrad at middle, the dorsal (anterior) face being somewhat depressed 
or excavated and bearing a moderate number of short stiff hairs. 
Fingers of chela crossing at tips, the outer one stouter, longer and more 
strongly bent at tip, (Plate 4, fig. 3). 
Pedipalps in type about as long as body, but in a second specimen in 
which the abdomen is strongly retracted they are considerably longer. 
Coxa strongly elevated above, the ventral process long and subcylin- 
drical, white in color. Trochanter constricted proximally; at distal 
end on ventral surface a large conical tubercle. Femur subcylindrical, 
a few inconspicuous tubercles along ventral surface. Patella unarmed. 
Tibia along mesoventral line with two long curved spinous processes 
and two very small ones between the two large and in front of the 
distal one respectively; along ectoventral line with two long less 
curved processes of which the anterior is the larger and near the base 
of the latter and distad of it a very much reduced spine. Tarsus in 
mesoventral line with two long processes and along ectoventral line 
with two large processes and a third smaller process on ectal side be- 
tween the others and in a second specimen with a small spine in front 
of others on ectal as well as.mesal side. Claw much longer than the 
tarsus, (Plate 4, fig. 4, 5). 
Legs I to III with femora, patellae, tibiae, and metatarsi tubercu- 
_ late, more strongly developed on femora than on more distal joints 
and more conspicuously ventrally than dorsally. Fourth legs with 
tubercles of femora largely replaced by more conspicuous conical 
processes; tubercles of other joints also stronger than on other legs 
Tarsus I of five segments, of which three are in the second division; 
II with eight, also with three in the second division; III with four 
(the most proximal with two false sutures thus giving appearance of 
seven articles), these densely clothed ventrally with fine short hairs 
as usual, none of the articles modified specially. Leg IV, (Plate 4, 
fig. 8). 
Length 5.6 mm.; greatest width of carapace 4 mm. 
Length of leg I cir. 8 mm.; of leg II, 14 mm.; of leg II, 11 mm.; 
of leg IV, 14 mm. 
Locality— Huadquina, 5,000 feet, July 24. (Type, M. C. Z. 127, 
one female). San Miguel, 6,000 feet, July. (Paratype, M. C. Z. 128, 
one female). 
