THE MYHIAPODA OK NORTH AMKRICA. 27 



Spinos of the first jKiir of feet, 2, 3, 2; peimltimato 1. 3, 3, 2; last 

 pair 1, 3, 3, 2. 



Last pair of feet moderately lon<; and swollen. 



Claw of the female genitalia not wide, indistinct tripartite, the middle 

 lobe mncli louj^er; spines slender, the inner shortest. 



Length of body irv"'"; last pair of legs I>""". 



Ilnhitat. — Ukiali, Cal. (J. 11. I{nrke),and Alexieo, 



This speeies is described from om- female, from the former locality, 

 which has the antenna^ and posterior legs broken otf. Having only a 

 short description of azteeus, 1 do not feel snre of my identitication, 

 althongh it agrees with it as far as it goes. 



11. Lithobius forficatua Liiin.Tins . 



Scolopcniha forfuata LinnaMJH, Syst. Nat. Ed. X, I, 638, 175S. 

 Lithoh'uiH forfiratnH Leach, Etlinb. Encycl., vii, 408, 1S1.'>. 



Brown, of varying shades; feet and ventral lamina' paler; tip of an- 

 tenme rufons. 



Kobnst, not smooth; a little hirsut<', espeiually jiosteriorly, and along 

 the edges of the dorsal lamina?. 



Head large, subquadrate, much wider than long (8: 5. 5), rough, 

 punctate, especially the fnmtal plate. 



AntennjB long, Joints 33-43, mostly short, densely hirsute. 



Ocelli distinct or not, 23-48, arranged in 6-8 series. 



Prosternal teeth moderate, 8-12. 



Coxal pores 0, 0, 6, 4-9, 10, 9, C, transverse or round in younger 

 specimens. 



Spines of the first pair of feet, 2, 3, 2; penultinxate, 1, 3, 3, 2; last 

 pair 1, 3, 3, 2. 



Posterior feet long, not much inflated. 



(Jlaw of the female genitalia trilobed, the mi(hlle lobe much longer; 

 spines short, robust, the inner shortest. 



Length of body 18-28"""; last pair of feet 10""". 



Habitat. — Eastern United States. 



I have examined about a dozen specimens of this species from Lud- 

 ington, Mich., and one from Bloomington, Ind. One female has the 

 claw of the genitalia four-lobed — having two divisions on the inner 

 side of the middle lobe. 



The following is a description of a young specimen: 



Antennjii 32- jointed. 



Ocelli 14, in 6 series. 



Prosternal teeth 6-10. 



Coxal pores 3, 3, 3, 3, round. 



Spines of the first pair of feet, 2, 3, 2; penultimate 1, 3, 3, 1; last 

 pair, I, 3, 2, 0. 



Length of body 11=""'; last pair of feet 4"'"\ 



%4 



A/fl 



