102 THE CANADIAN ENTOMOLOGIST. 



Localities. — Peoria, East Peoria, Franklin Grove, Dwiglu and Ster- 

 ling, 111.; Mongona, Baone, DeWitt, Marshalltown, Tama and Ogden, 

 Iowa ; Kiaiball's, Fond du Lac, Marinette, Eau Claire, Haugen, Devil's 

 Lake, Janesville, Ashland and Beloit, Wisconsin ; Ann Arbor, Waters- 

 meet, Powers and Menominee, Michigan. Also reported from Winona, 

 Minn, (common), and from Lawrenceburgh, Greencastle, Connersville, 

 Westfield and Bloomington, Indiana (common in northern section). 



6. Lithobius celer B oilman. 

 Localities. — A specimen from Michigan and one from Wisconsin are 

 referred provisionally to this species. There is considerable doubt as to 

 their position. Both are not fully-grown males. 



7. Lithobius numius, sp. no v. 

 Angles of the 9th, nth and 13th dorsal pUtes produced, those of the 

 7th plate also slightly extended. 



Antennie with 20 articles. 



Prosternal teeth 2 -H 2. 



Last two pairs of coxae laterally armed, last three pairs dorsally armed. 



Spines of the first legs i, 3, 1-2, 3, i ; spines of the penult legs i, 3, 

 3, 2, the claw armed with two spines; spines of anal legs 1,3, 2, o, the claw 

 armed with one spine. 



Coxal pores round, 3, 5, 5, 5. 



Gonopods of female with the claw tripartite or almost bipartite 

 through the pronounced reduction or almost obliteration of one tooth ; 

 spines 2 + 2. 



Length, 11 mm. 



Locality. — Haugen, Wisconsin. 



8. Lithobius bius sp. no v. 

 Angles of the 9th, nth and 13th dorsal plates produced. 



Antennae with 20 articles. 



Prosternal teeth 2>'^ Z- 



Last three pairs of coxae laterally armed ; last four pairs armed 

 dorsally. 



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

 with two spines; spines of the anal legs i, 3, 2, i, the claw armed with 

 two spines. 



