248 Illinois State Laboratory of Natural History. 



teeth. Third segment about half as wide as the second and 

 approximately three times as long as its greater width ; inner 

 margin silicate and armed with live stout parallel plumose 

 setae; outer margin armed with two strong straight spines, 

 the upper at about the beginning of the distal third, the lower 

 at the apical angle, and both serrate on the inner margin. 

 Just within the apical spine are a short blunt process and a 

 long, narrow, awl-like process almost twice as long as the 

 segment. 



Inner ramus of fifth leg of female three-segmented, the first 

 segment subelliptical, somewhat less than twice as long as 

 wide, and hairy at the middle of the inner margin. Second 

 segment a little wider than the first, about twice as long as 

 wide, hairy at the middle of the inner margin; outer apical 

 angle armed with a stout plumose seta. Third segment about 

 as wide as the first, margins sulcate ; armed with six stout 

 plumose seta?, two apical and two on each side. 



Length of female about 1.65 mm. ; that of the male 

 1.60 mm.* 



The above description is based on specimens kindly sent 

 me by Herr S. A. Poppe. On examination I found a few 

 minor differences between the specimens sent me and the 

 original figures. These differences I note below. The second 

 thoracic segment instead of being only as long as the two 

 succeeding ones is about as long as the remainder of the 

 thorax. The innermost f ureal, seta is plumose instead of 

 smooth — as figured in the original drawings. In the fifth pair 

 of legs of the male the spines on the outer ramus of the left 

 leg were found to be serrate on the inner margin instead of 

 smooth. The spine or seta on the outer apical angle of the 

 second basal segment of this leg is plumose. The inner 

 margin of this segment is hairy or minutely spinose. Neither 

 the short hook-like spine at the inner proximal angle of the 

 second segment of the left inner ramus, nor the stout straight 

 spine (serrate on the inner margin) at the outer apical angle 

 of the right outer ramus is figured or described in de Guerne 

 and Richard's "Revision." I was unable to find the hairs 



* Measurements as given in de Guerne and Richard's" Revision " (89b). 



