THE MYRIAPODA OF NORTH AMERICA. 85 



Subgenus Archil Wt obi us. 



Orange, bead and last segments dark, feet and antennas scarcely 

 paler. Rather slender, smooth, sparsely pilose: bead subrotund, 

 longer than wide. Antenna 1 rather long, joints 31, short. No trace of 

 ocelli, but darker colored in the place where they ought to be. Pro- 

 sternal teeth 4. Coxal pores 2, 3, 4, 3, round. Spines of the first pair 

 of feet, 2, 2, 1 ; penultimate, 1, 3, 2, 0; last, 1, 3, 1, 0. Last pair of 

 feet moderately long. Claw of the female genitalia long, bilobed; 

 spines slender, inner shortest. Length of body, 10""". 



18. Lithobius lundi Meinert. 

 Two specimens obtained. 



19. Lithobius proridens Bollman. 



20. Lithobius cantabrigensis Meinert. 



21. Lithobius multidentatus Newport. 

 Two specimens obtained. 



C— MOSSY CREEK, Jefferson County. 



The species from this locality were taken in the woods half a mile 

 northwest of the railway station, May 22, 1887. 



1. Parajulus permsylvanicus (Brandt). 



2. Geophilus umbraticus (McNeill). 



3. Scolopocryptops nigridius McNeill. 



4. Cryptops hyalinus Say 



5. Lithobius branneri Bollman. 

 Two specimens obtained. 



6. Lithobius similis, sp. nov. 



Subgenus Archilithob i m. 



Brown, head and last segment orange; antennae dark, feet somewhat 

 paler. Moderately robust, rough, sparsely pilose; head subrotund, 

 length and width subequal. Antennae short, joints 21, short. Ocelli 

 1G, arranged in (> rows. Prosternal teeth, 4. Coxal pores, 4, 5, 5, 5, 

 large and round. Spines of the first pair of feet, 1,2, 1; penultimate, 

 1, 3, 3, 1 ; last, 1, 3, 1, 0. Posterior feet moderately long. Claw of the 

 female genitalia moderately short, wide, tripartite, lobes short; spine 

 short and stout. Length of body, 11""". 



This species is described from one female; it is related to pullus, but 

 differs from the latter in the characters of antenna? and the claw of 

 female genitalia. 



7. Lithobius proridens Bollman. 



University of Indiana, 

 Entomological Laboratory, June 8, 1887. 



