CHAMBERLIN: THE ARACHNIDA. 273 
CASTANEIRA QUECHUA, Sp. nov. 
Plate 22, fig. 1. 
Carapace, sternum, and chelicerae black; labium and endites also 
nearly black excepting for pale tips. Coxae ventrally yellowish, the 
femora black, the succeeding joints more or less dark testaceous, 
except the tibia and metatarsus of fourth legs which are nearly black. 
Abdomen black, a vague light line across middle above and laterally 
but not crossing middle part of the venter. Carapace with numerous 
white plumose hairs. Legs with similar hairs but also with numerous 
black hairs intermixed. Abdomen with white plumose hairs and 
many simple black hairs. 
Posterior row of eyes procurbed in such degree that a line tangent 
to the anterior edges of the medians cuts the laterals near the begin- 
ning of the caudal third; medians nearly once and a third their diam- 
eter apart, less than their diameter from the laterals which are of the 
same size or nearly so. Area of median eyes equal in length and 
breadth or very nearly so, scarcely narrower anteriorly than pos- 
teriorly. Anterior row of eyes procurved; median eyes their radius 
apart, half as far from the laterals; medians with diameter exceeding 
that of laterals in ratio 9:7; the long diameter of the laterals exceeding 
the lesser diameter nearly in ratio 7:5. Clypeusa little wider than the 
diameter of a median eye (about as 11:9). 
Sternum three fourths as wide as long; borders depressed as usual; 
anterior margin straight, sides converging to meet at an angle caudad 
but the angle not acute. 
Labium and chelicerae typical. 
Tibia of leg I armed beneath with three pairs of spines, metatarsus 
with two pairs. Tibia II with but two pairs of spines beneath, the 
metatarsus also with two pairs. Tarsi and metatarsi I and II scopu- 
late to base; metatarsi III and IV scopulate only distally. 
Female. Length,8 mm. Length of cephalothorax, 3.25; width, 
2 mm. 
fem. tib.+pat. met. tar. total 
Leg I 2.6mm. 3mm. 2mm 1.2mm. 8.8mm. 
Terie ee 2.8 1.9 t4 8.0 
Leg III 2.2 2A. 2.0 eat Cadi 
Leg IV 2.6 25) Dull i} 10.3 
Tibia I, 2.1mm. Tibia IV, 2 mm. 
