28 BI'LLETIN 4fi, UNITKD STATES NATIONAL Ml'SEUM. 



12. LithobiuB xanti WimkI. 



LithobiuH xanti W<»o«l, Joiirii., Acail. Nut. S<*i., IMiila.. l.'i. ls»i:{. 



Fulvous, feet, antoniui' and ventral |»lat«*s pale, head dark. 



Jtobust, not Hinooth; sparsely pilose above, the ventral ]>late densely 

 pilose posteriorly. 



Head moderate, ohcordate, not nineh wider than lonj; (."i.-'i :."»); smooth, 

 sparsely pilose. 



Antenna' lonj;. Joints 20, all lonj;. 



Ocelli 12-15, arranjjjed in 6 or 7 series. 



I'rosternal teeth lo-20, small, not eoadnate on the inner side. 



Coxal pores numerous, arranged in 3-5 series. 



Spines of the lirst pair of feet 2, 3, 1 ; jjenultimate (1), 1, 3, 3, 2; last 

 pair(l), 1*, 3, 2,0, or (1), 1,3,2,1. 



Last pair of feet lonjif, slender, not swollen. 



Claw of the female genitalia long, wide, tripartite, the nwddle lobe 

 long, the inner very small; spines, 3 ou each side, long, slender, and 

 wavy. 



Length of body 20-25"""; last pair of legs !)-ll"'"'. 



Habitat. — California and Oregon. 



I have examined a nund)er of si>eciinens of this species from I'kiah, 

 Cal., collected by Mr. .1. H. Burke. 



13. Lithobius politus McNeill. 



Lithohiiis jiolitiis McNeill (MSS.). 



Brown; head, antenna' and edges of dorsal plates dark; feet and ven- 

 tral plates paler. 



Robust, smooth pilose. 



Headmoderate,obcordate, of about equal length and breadth; s])arsely 

 pilose. 



Antennje short. Joints 20, mostly long. 



Ocelli 15-18, arranged in or 7 series. 



Prosternal teeth 4, small. 



Coxal pores 3, 4, 4, 3-5, 0, C, C, round. 



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

 1, 3, 2, 1. 



Last pair of feet moderate, scarcely swollen. 



Claw of female genitalia short, wide, tripartite, tlu^ middle lobe not 

 much longer; spines short and thick, subequal, the outer sometimes in- 

 distinct, notched on the inner side. 



Length of body 8-11"""; last pair of legs 3-4""". 



Habitat. — Dublin and Bloomington, Ind., and LTulington, Mich. 



I have examined the types of this species from Dublin, Ind., besides 

 a number of specimens from Ludington, INIich., and one female from 

 Bloomington, Ind. The one from the latter place is larger; the coxal 

 pores are also more numerous and of a larger size. 



