250 bulletin: museum of comparative zoology. 



Aranea quechuana, sp. nov. 

 Plate 19, fig. 1. 



Carapace testaceous, unmarked. Sternum dusky brown or black- 

 ish. Labium and endites dusky, pale across tips. Legs pale yellow; 

 femora with a wide dusky ring near one third the distance from the 

 distal end or in less deep shade including also the distal portion; 

 posterior patellae darker and the posterior tibiae with darker annulus 

 at distal end. Abdomen whitish yellow; venter with a black area 

 imiUediately back of the genital furrow but this typically not extend- 

 ing to spinnerets, weakly dusky over each anterolateral corner and 

 caudad from there over upper portion of each side; dorsum with a 

 fine median longitudinal dark line extending from in front of middle 

 caudad and sending off laterad a number of pairs of fine branches, a 

 row of from two to four black dots on each side caudad of the middle, 

 these two rows somewhat converging toward the spinnerets. 



Carapace broad and low; groove longitudinal, distinctly impressed^ 

 crossed behind bj- a vague transverse impression. 



Posterior row of eyes distinctly recurved as usual ; median eyes only 

 five eighths their diameter apart, two and a half times their diameter 

 from the laterals. Lateral eyes subequal, contiguous, raised on a 

 common low black tubercle. Anterior row of eyes slightly recurved; 

 median eyes a little longer than the posterior medians (diameters as 

 5:4), their diameter apart, once and a third their diameters from the 

 laterals. Area of median eyes wider in front than behind in ratio 

 14:11; wider than long in about ratio 14:13. 



Sternum slenderly extended caudad between the posterior coxae. 



Legs abundantly aculeate or spined as usual; two rows of spines 

 on anterior face of tibia II shorter and distinctly stouter than those 

 found elsewhere. 



Patella of palpus above at distal end with two long slender spines. 

 Process of cymbium undivided, somewhat clavately expanded distad, 

 moderately curved. 



Male. Length 6.2 mm. Length of cephalothorax 3.1 mm.; width 

 2.8 mm. Tibia I, 3.6 mm.; Tibia IV, 2.1 mm. 



fern. tib. + pat. met. tar. total 



Leg I 4.25 mm. 5 mm. 4 mm. 1.5 mm. 14.75 mm. 



Leg II 4 4.1 3 1.2 12.3 



Leg III 2.5 2.25 1.9 1 7.65 



Leg IV 3 3.2 2.6 1 9.8 



