84 Illinois State Laboratorij of Natural History. 



eminence, sometimes obsolete, especially in older specimens. 

 In some individuals there is so much black cephalad of the eye 

 eminence that the central marking appears to begin on the 

 cephalic margin of the cephalothorax. Eye eminence of about 

 equal height, length, and breadth, sloping slightly backward, 

 dark above, canaliculate, with a few (two to five or six) sub- 

 obsolete acute blackish tubercles. Mandibles very light brown, 

 tips of claws black; dorsal surface of second joint sparsely cov- 

 ered with short spinous hairs. Palpi long, reddish brown, depth 

 of color varying with the rest of the body. Femur with a row 

 of short conical tubercles on its outer ventro-lateral surface, 

 commencing near the base and running to the apical extremity, 

 where there are about a dozen similar tubercles on the ventral 

 surface; another short, slightly oblique series on the dorsal 

 surface, beginning at the apical margin and extending distally 

 about one fourth the length of the femur. Patella with a row 

 of tubercles on its outer ventro-lateral surface, similar to those 

 on the femur, and a few subobsolete ones on its dorsal and 

 ventral surfaces. Tibia with two nearly parallel rows of tuber- 

 cles, one on the ventral and the other on the outer ventro- 

 lateral surface; a short row also on the distal portion of its 

 inner ventro-lateral surface. Tarsus sparsely covered with stiff 

 hairs, and furnished with a well pronounced row of dark 

 tubercles on its inner ventro-lateral surface. Ventrum varies 

 from whitish to dark reddish-brown, with well marked gran- 

 ulations in older specimens. Coxas slightly tuberculate, each 

 having a row of short tubercles on the cephalic margin. Legs 

 varying from light grayish-brown to black, with darker annu- 

 lations. Shaft of penis slender, distally bent nearly at right 

 angles, and terminating in a very acute point. 



?. Body 5-7 mm. long, 3.5-4.5 mm. wide. Palpi 5 mm. 

 long. 



Legs : L, 27-30 mm. ; H., 50-(U mm. ; [IL, 28-31 mm. ; 

 IV., 40-44 mm. 



Differs from male as follows : 



Body much thicker and more rounded. Color generally 

 darker with much less reddish. Legs brownish rather than 

 black. Palpi very much more slender, shorter, and having the 



