CHAMBERLIN: THE ARACHNIDA. De 
Epigynum with scape short; broad at base but narrowed to a 
slender tip projecting caudoventrad, (Plate 19, fig. 6). 
Female. Length, 6.7 mm. Length of cephalothorax, 2.9 mm.; 
width, 2.3 mm. 
fem. tib.+-pat. met. tar. total 
Leg I 3.25mm. 3.2mm. 3mm. 1l.lmm. 10.55 mm. 
Leg II ou 3 ee 1 9.3 
eg Dll yi 2h al 2 1 0.9 6.0 
Leg IV 3 2.8 2 1 8.8 
Tibia I, 2.1. Tibia IV, 1.9 mm. 
Localities.— Ollantaytambo, 9,000 feet, July. (Type, M. C. Z. 
231, female; paratype, M. C. Z. 232, female). Urubamba, 9,500 
feet, July. (M. C. Z. 233, female). 
ARANEA PLESIA,! sp. nov. 
Plate 19, fig. 5. 
Carapace deep chestnut or blackish, paler along middle part of 
head. Sternum black. Legs light brownish yellow, the joints an- 
nulate with dark about distal ends, the tibiae of anterior pairs also 
with a subbasal and narrow basal band. Abdomen with median 
portion of venter black, the black area limited on each side by a nar- 
row yellow longitudinal stripe; lower portion of side black, the rest of 
sides and the dorsum paler, whitish yellow covered with a close net- 
work of fine dark lines; back of middle of length a row of short, solid 
black, transverse spots or lines each side of the middle, the anterior 
of these bordered in front with white, on anterior portion of dorsum 
two curving white lines meeting at an angle on the median line, the 
figure thus formed having its edges lined with black. 
Posterior row of eye conspicuously recurved; median eyes their 
diameter apart and between two and a half and three times their 
diameter from the laterals. Lateral eyes subcontiguous and slightly 
elevated together as usual. Anterior row of eyes straight or slightly 
recurved; median eyes equal in diameter to posterior medians, 
nearly one and three sevenths their diameter apart and about the 
same distance from the laterals or but slightly more. Area of median 
eyes wider in front than behind (11:10), nearly equal in length and 
breadth. 
1 rAnotos, close to. 
