286 bulletin: museum of comparative zoology. 



Lycosa andina, sp. nov. 

 Plate 24, fig. 2-3. 



Carapace dark brown, a broad median longitudinal stripe from 

 eyes caudad and narrowing to caudal edge testaceous, this stripe 

 limited as far back as the thoracic furrow by a narrow black line; a 

 narrow pale supramarginal stripe on each side. Sternum, labium, 

 endites, and coxae of legs beneath deep blackish brown in alcohol or 

 dense blackish when dry. Chelicerae black; a dense coat of orange 

 colored hair on anterior face, especially distally. Legs brown, femora 

 paler beneath; patella black across ventral surface; tibiae with a 

 broad black band across distal end on ventral half. Abdomen grey- 

 brown, venter wholly dusky; dorsally with a median longitudinal 

 black stripe at base this first clavately widening and then abruptly 

 narrowed to continue as a narrow tongue to middle wliere it bifurcates 

 in two narrow pointed branches; caudad of this mark two or three 

 slender black chevron-marks are usually distinctly indicated. The 

 male is colored similarly to the female but the venter back of the 

 genital furrow is solid black and the abdomen in a stripe across each 

 anterolateral corner and caudad along side of abdomen is also black. 



Cephalothorax in profile with the dorsal line convex, very little 

 rising cephalad of the groove. 



Anterior row of eyes procurved, equal in length to the second; 

 median eyes decidedly larger than the laterals (diameters as 4:3), 

 rather less than their radius apart, closer to the laterals; anterior 

 medians about their diameter from lower edge of clypeus. Eyes of 

 second row with diameter larger than that of anterior median eye in 

 about ratio 18:11, nearly two thirds their diameter apart. Eyes of 

 third row smaller than those of the second (diameters nearly as 5:6); 

 about five sixths their diameter from eyes of second row, more than 

 twice their diameter apart. Cephalothorax between 7.25 and 7.5 

 times longer than the quadrangle of the second and third eye rows. 



The three teeth of the lower margin of furrow of chelicera long, 

 conical, stout, the most proximal one a little largest. 



Distal edge of labium broad, very slightly incurved from end to end. 



Sternum semicircular, longer than wide in about ratio 3.1:2.9. 



All tarsi and metatarsi scopulate to base; anterior tibiae also 

 densely scopulate over distal half or more. Anterior tibiae with the 

 usual ventral spines only; posterior tibiae in addition to the ventral 



