262 Illinois State Tjahoratorj/ of Natural Histort/. 



Left fifth leg of male uniramose, three-segmented. First 

 segment siibquadrate, produced on the inner margin into a 

 long, broad, strongly curved hook-like process about twice as 

 long as the main part of the segment and armed at the tip 

 with a broad blunt spine ; provided at the outer apical angle 

 with a rather stout hair or spine. Second segment about as 

 long as the first but much narrower ; margins parallel, the 

 inner margin concave ; usually unarmed but sometimes pro- 

 vided at the outer apical angle with a minute sharp spine. 

 Third segment irregularly triangular in form and about one 

 and a half times as long as the second, somewhat produced 

 at the inner proximal angle ; armed at the tip with a short 

 broad spine, on the outer margin with three spines, dividing 

 it approximately into thirds, and on the inner margin Avith a 

 close row of long delicate hairs. 



Right fifth leg uniramose, two-segmented. First segment 

 irregular in form, the outer margin almost straight, the inner 

 produced on the lower half into a large lamella or flat 

 process* ; usual seta at the outer apical angle wanting. The 

 second segment consists of a l)roader basal and a narrower 

 terminal part which is always flexed inward and upAvard ; 

 inner margin slightly produced at the tip. 



Fifth leg of female uniramose, three-segmented. First 

 segment barrel-shaped, armed at the outer apical angle with 

 a delicate spine. Second segment about half as wide as the 

 first and about three times as long as wide ; armed at the 

 outer distal angle with a minute spine. Third segment 

 slightly narrower than the second and about one and a half 

 times as long ; armed on the outer margin with three spines 

 (the upper two smooth, the lower one spinulose) ; on the 

 apical margin with three spines (the outer two spinulose on 

 their opposed margins and the inner one on both), and on the 

 inner margin with one spine, spinulose on the inner margin. 



Length of female 1.784 mm. ; that of male 1.37(5 mm. 



The above description was prepared from type specimens, 

 from Dr. Forbes's slides, from specimens taken in the same 



*In one or two specimens I thought I saw indications of several teeth, similar to 

 those in E- nevndensi.i, but coulil not fully satisfy myself of their presence. 



