200 bulletin: museum of comparative zoology. 



tionately more slender, one or two extra points may occur in addition 

 to the five ordinary teeth, (Plate 7, fig. 5-7). 



Scopulae of anterior tarsi divided by a narrow setose line, the 

 posterior ones by a broader one, but this much narrower than the 

 joint. Anterior metatarsi scopulate well toward base; posterior 

 with scopular hairs only distally and there sparse or absent. Meta- 

 tarsus I (female) ventrally with a pair of small apical spines and a 

 single one proximad of middle. Tibia I (female) also ventrally with a 

 pair of spines at distal end and a single submedian one ; in the male 

 with seven spines on ventral and ventrocaudal surface and two on 

 anterior surface. Metatarsus IV with fifteen to eighteen spines 

 irregularly arranged; tibia IV with eight to ten. 



In the male the metatarsus of leg I is abruptly much more slender 

 than the tibia and is strongly bowed dorsad. The spurs of the tibia 

 are elevated on a conspicuous common basal process standing at right 

 angles to the article; the inferior process is not much longer than the 

 superior but it is proximally stouter being narrowed distad, moderately 

 curved toward end, bearing on dorsal surface a dark, stout, acute 

 process attached near apex and corresponding to the larger one of 

 penivianus; superior process directed more cephalad, more uniform 

 in diameter, curved a little mesad toward tip, the spine rather slender, 

 closely applied to surface excepting at tip which is divergent, (Plate 

 7, fig.^4). 



In the male palpus the tibia is thicker than the patella or femiu", 

 narrowing distad, a narrow ridge-like thickening mesoventral edge 

 from middle distad and elevated at distal end into a low tubercle, 

 ventrally with a dense growth of long bristles. Tarsus short, bilobate 

 as usual, the mesal lobe at distomesal corner adjacent to bulb extended 

 into a blackish, densely chitinized tubercle. Spine of bulb propor- 

 tionately much longer than in pcruvianus, basal part with axis corre- 

 sponding with long axis of bulb, curving semicircularly first ventrad 

 and then forwards as shown in the figure, a slight tooth a little distad 

 of middle, in anterior view the process bends first somewhat ectad. 



Male (Type, Cuzco Valley). Length, 29 mm. Length of cephalo- 

 thorax, 14 mm.; width, 12.3 mm. 



