the myriapoda of north America. 103 



long, extending to the ninth segment, articles 20, long. Ocelli 19, in c> 

 I ransverse series. Prosternal teeth 9+0. Ooxal pores, 8, 8, S,7, large, 

 transverse. Spines of the Hist pair of legs, 1, ."», 2; of the penultimate 

 pair, 1, 3, 3, 2; of anal pair, 1, 3, 2. 



Female: Claw of genitalia wide and short, tripartite; spines 2+2, 

 short and stout, ends tiattened and obscurely serrate. Length, 25""". 



This species is described from a female specimen, which has the fourth 

 segment considerably angulated, and I at first placed it in a new sub- 

 genus. But a study of multUJeiitatus showed that the angulation of 

 the fourth dorsal plate was subject to considerable variation. 



This is the only Xorth American species of the subgenus Eulithobius 

 that has thecoxal pores in a single series, and in this respect approaches 

 L. valid-us of Europe; but that species has 40-48 antenna! joints. Ace. 

 19542, 21 contains a female of this species. 



44. Lithobius multidentatus Newport. Marksville and Natural Bridge, Va. ; L. 

 M. Underwood. 



Indiana University, December 1, 1888. 



