276 BULLETIN: MUSEUM OF COMPARATIVE ZOOLOGY. 
Labium strongly thickened across base, the thickened portion sepa- 
rated by a distinct transverse furrow from the distal portion; sides 
moderately converging distad, substraight proximad, convex toward 
tip; apically truncate; wider than long in ratio 6:5, (Plate 21, fig. 9). 
Upper margin of furrow of chelicera with the usual three stout 
teeth of which the median is largest; lower margin with two stout 
and subequal teeth. 
Palpus of female unspined; claw smooth. 
Tarsi and metatarsi of legs I and II densely scopulate and with 
some scopular hairs on distal end of tibia; tarsi and distal portion 
of metatarsi also scopulate in legs I andIV. All legs without spines. 
Female. Length 8 mm. Length of cephalothorax 4 mm.; width, 
3.2 mm. 
fem. tib.tpat. met. tar. total 
Leg I 3mm. 3.7mm. 2mm. 1.3mm. 10.0 mm. 
Leg II 2.8 3.3 1.9 ite 9.2 
Leg II 2.2 Det 1.8 1 Troll 
Leg IV 3.2 3.8 2.7 1.3 11.0 
Tibia I, 2.2mm. Tibia IV, 2.4 mm. 
Localities — Urubamba, 9,500 feet, July. (Type, M. C. Z. 263, 
female; paratype, no. 264, one female). Ollantaytambo, 9,000 feet, 
July. (M. C. Z. 265, one female). 
PISAURIDAE. 
TRECHALEA sp. 
Three immature specimens of an uncertain species were secured 
at Huadquina, 5,000 feet, July. (M. C. Z. 266). 
TRECHALEA MONTICOLA, Sp. Nov. 
Plate 23, fig. 1. 
Carapace brown, darker, more black, along the lateral borders; 
on each side a pale supramarginal stripe uniting with the one of 
opposite side across the clypeus, these stripes more or less zig-zag; 
a median longitudinal pale band narrow from caudal margin to the 
pars cephalica upon which it expands to nearly the width of the eye- 
area and then extends as a narrow tongue between the eyes, this broad 
portion embracing a longitudinal dark line back of each posterior 
PI ef 
OC OO 
