68 . THE CANADIAN ENTOMOLOGIST. 



c. Claw of penult legs armed with two spines. 



Spines of penult legs i, 3, 3, 2 ; of first legs i, i, i; claw 

 of female gonopods entire L. oedipes Bollman. 



cc. Claw of penult legs armed with a single spine. 



Spines of penult legs i, 3, 3, i ; of first, i, 3, i ; claw of 

 gonopods of female 

 tripartite Z. Jiarrietce, Chamberlin_ 



bb. Claw of anal legs unarmed. 



Coxal pores transverse ; articles of antennae 33 to 43 or more ; 

 ocelli 20 to 50 . . Z. forficatus Linn. 



aaa. Angles of none of the dorsal plates produced. 



b. Claw of the anal legs unarmed. 



Spines of first legs 2, 3, 1-2, 3, 2 ; of anal i, 3, 2, i ; claw of 

 female gonopods entire Z. jowenns Meinert. 



bb. Claw of anal legs armed with one spine at base. 

 c. Articles of antennae 25-32. 



Spines of first legs o, i, i j of penult legs i, Z^ Z^ ^ '•> ^^ 

 anal i, 3, i, o-i, 3, 2, o Z. tiviiis Chamberlin. 



cc. Articles of antennae normally 20-21. (Spines of penult 

 legs I, 3, 3, 2.) 



d. Spines of anal legs i, 3, 2, o ; penult legs armed 

 with one spine at base; spines of first legs i, 

 3, I ; claw of female gonopods tripartite ; 



length, 12-16 mm Z. dopaijitus^ sp. nov. 



dd. Spines of anal legs i, 3, 2, o; claw of penult legs 

 with two spines; spines of rst legs i, i, i-i, 

 2, I ; claw of female gonopods mostly bipar- 

 tite ; length, 7-8 mm . . . . Z. co/oradensis Ckll. 



Lithobius tnordax Koch. 



A single male appearing to be this species has been examined from 

 the State. It had lost the posterior pairs of legs. The species abounds 

 in the States to the south-east. 



Boulder Co. (Cockerell). 



Lithobius oedipes Bollman. 

 A number of specimens, both males and females, were taken by the 

 author at Manitou (1910). The species was known previously only from 

 the type specimens which were from Arkansas. 



