36 Annals Entomological Society of America [Vol. IV, 



Coxal pores small, 2, 2, 2, 2. 



All legs with three claws excepting tin me of the ultimate pair which 

 seem to have the exterior accessory claw but to lack the inner one. 



Anal legs of male moderately and uniformly crassate; the penult 

 legs with the fifth joint strongly enlarged and somewhat flattened dorso- 

 vcntrally, complanate above or weakly depressed, complanate and weak- 

 ly furrowed beneath. (See PI. 3, figs. 4 and 5). 



Claw of female gonopods tripartite; basal spines 2 + 2. 



Length 7.5-9.5 mm. 



Localities. — Thomasville and Anniston, Ala.; Tallulah Falls 

 and Bremen, Ga. 



Genus Lithobius Leach. 



Several of the species listed under this genus below conform 

 to Monotarsobius as denned by Verhoeff in having the anterior 

 tarsi (those of the first thirteen pairs of legs) undivided whereas 

 those of species belonging to Lithobius proper have the tarsi 

 all biarticulate. However, this character seems variable to 

 such an extent that it is difficult to place some species upon 

 this basis; hence, it seems best not to maintain it until some 

 correlated characters, if such exist, shall be worked out. Those 

 species which have the anterior tarsi clearly undivided are 

 specially indicated below. 



6. Lithobius coecus Bollman. 



18SS. Lithobius coccus, Bollman, Ann. X. Y. Acad. Sci.. p. 111. 

 Locality. — Saluda, N. C. The only other known locality 

 for this species is that at which the types were collected, Beaver 

 Creek, Tenn. 



7. Lithobius tuobukus sp. nov. 



Light brown to yellow, the posterior segments often darker; head 

 concolorous with body or often a darker, reddish brown; antennae 

 light brown proximally, paler distad; legs light brown, the posterior 

 pairs yellow, especially bright distad. 



Antennae short or moderate; articles 25-29, all except the first few 

 moderate or short in length. 



Prosternal teeth mostly 5+5 or 6+6, small, even. 



Ocelli compactly arranged in an oblong patch in three series; thus 

 1+4, 5, 4, a total" of 14. 



None of the dorsal plates with the posterior angles produced. 



Coxal pores rather small, round, 3, 4, 4, 3. 



Last two pairs of coxae armed laterally, the last four pairs dorsally. 



Spines of the first legs 2, 2, 1; of penult 1, 3, 3, 2, the claw single; 

 of the anal 1, 3, 3, 2, the claw also single. 



