42 BULLETIN 46, UNITED STATES NATIONAL MUSEUM. 



Pairs of legs, 9 64 to 67. Length of body, 9 36" 1U '; width 1.2"' m . 



I have examined a number of specimens collected by Mr. J. H. Burke, 

 of Ukiah, Cal. This species should be placed near G. occidental Mei- 

 nert, although it seems to bear little relation to the latter. 



12. Lithobius eigenniaiini, ssp. nov. 



Diagnosis. Allied to Lithobitis obesus Stuxberg, but the claw of fe- 

 male genitalia tripartite; spines of anal feet 1, 3,3,0; coxal pores more 

 numerous. 



Type. U. S. Nat. Museum. 



Habitat. Glacier, British Columbia. 



Description of type. Brown, feet paler, slender, moderately rough 

 posteriorly; head scarcely wider than long. Antennae, short, articles 

 20, short. Ocelli 8 to 12, arranged in 4 or 5 series. Prosternal teeth 

 2 + 2. Coxa? of 13, 14, 15 pairs of legs laterally armed. Coxal pores 3, 

 4, 4, 3 to 4, 5, 5, 5, large and round. Spines of first pair of feet 1,2, 1 ; 

 penultimate pair 1, 3, 3, to 1, 3. 3, 1 ; anal pair 1, 3, 3, 0. Claw of female 

 genitalia tripartite; spines (2 4- 2) stout and short, inner shortest. 



Length of body 7.5 to 9 11 ' 111 , width 1.1 to 1.5 mni ; antenna- 3 to 3.5"""; 

 anal legs 3.2 to 3.8' U1 ". 



I have examined a number of specimens collected by Mi-. Carl H. 

 Eigenmann, to whom I take great pleasure in dedicating this species. 



13. Lithobius atkinsoni, sp. nov. 



Diagnosis. Anal and penultimate pairs of legs each armed with a 

 single claw; joints of antennae 26, color chestnut. 



Type. U. S. Nat. Museum. 



Habitat. Balsam, Jackson County, N. C. 



Description of type. Chestnut, head and antennae of a deeper shade, 

 legs orange. Slender, dorsal plates moderately smooth, especially an- 

 teriorly, very sparsely pilose; head oboor date, length and width sub- 

 equal. Antennne short, reaching to fifth segment, joints 26, small. 

 Ocelli 14-5. Prosternal teeth 5 + 5, small. Coxa of the ( ?) pairs of feet 

 laterally armed. Coxal pores 4, 5, 5, 4, small and round. Spines of first 

 pair of legs 2, 1, 1; penultimate and anal pairs 1, 3, 3, 2. Anal legs 

 somewhat swollen, tarsa 1 of anal and penultimate pairs of legs sulcate 

 on inner side. Claw of female genitalia short, tripartite; spines 2 4-2, 

 inner shortest. 



Length of body J2.5"" 1 ', width 1.8 11 ' 111 ; antenna* 4"""; anal legs 5""". 



This species bears no relation to any known from North America ; 

 in fact, it is the only one of the subgenus Lithobius with the penulti- 

 mate pair of legs armed with a single claw. 



I have examined one specimen collected by Prof, (leorge F. Atkinson, 

 of the University of North Carolina, to whom I have the honor of dedi- 

 cating this species. 



