94 Illinois State Lahoratonj of Natural History. 



lighter shades ; angular, with longitudinal rows of black spines. 

 Sheath of penis subcylindrical, truncate. Shaft robust, with 

 two lateral oval openings near distal extremity, then con- 

 tracted into a blunt scoop-shaped piece, turned upward at 

 nearly a right angle, and terminating with a slender acute 

 point. 



In very small specimens of this species, as of many others 

 of the group, the tubercles on the body and members are often 

 partially wanting or replaced by hairs. 



?. Body 7.8 mm. long, 3.5 mm. wide. Palpi 4 mm. long. 

 Legs: I., 20 mm.; II., 36 mm.; III., 20 ram.; IV., 28 mm. 



Differs from 6 as follows : 



Dorsum darker gray, more mottled ; central marking more 

 distinct. Tubercles on eye eminence more numerous, and those 

 forming the longitudinal series cephalad of the eye eminence 

 also more numerous. Palpi with hairs, but without tubercles. 

 Legs with annulations more distinct ; trochanters without 

 tubercles; spines on femur less prominent and on tibia obso- 

 lete. Narrow quadrangular brown patches on ventrum of 

 abdomen arranged in transverse series. Distal joints of ovi- 

 positor black. 



Described from many specimens collected in Champaign 

 Co., III., during October, 1886, and August, 1887. I have 

 also received a fine lot of this species from my brother, Mr. 

 Howard E. Weed, collected at Lansing, Michigan, where it was 

 very common during the autumn of 1886. 



Oligolophus, C. Koch, 1872. 



Teguments soft or subcoriaceous. Striit of the cephalo- 

 thorax and of the three last abdominal segments very clear, 

 those of the first five segments only slightly distinct. Anterior 

 border of the cephalothorax smooth, or provided at the middle 

 with three small geminated points; lateral borders more or 

 less spiny; dorsal surface of cephalothorax nearly always pro- 

 vided with small teeth. Abdomen presenting transverse series 

 of small teeth or hairs. Eye eminence of medium size, as wide 

 as long, or a little wider than long, lightly canaliculate, pro- 

 vided with two series of low tubercles, separated from the 



