414 bulletin: museum of comparative zoology. 



the writer as atopleurus there is no single pore but in its place a pecu- 

 liar chitinous thickening that at first appears like a minute tooth or 

 spine. In a number of additional specimens in this condition taken 

 in Mississippi, the characteristics upon which the original was sepa- 

 rated as a species are well marked. The chitinous marks are in 

 shallow depressions and after a careful study of them, I conclude that 

 they represent the completely closed pores, the lines being the ap- 

 pressed and fused margins of the pore. This condition appears to 

 be rare. 



There is considerable variation in the anal pores, these being usually 

 less readily distinguishable in older individuals than in young and 

 partly grown ones. In fact, they seem in some old specimens to have 

 become grown over and closed. Hence the possibility of Meinert's 

 statement "Pori anales nulli." In the great majority of individuals, 

 however, the pores are distinct, though often not readily seen from 

 ventral view. 



Geophilus legiferens Chamberlin. 

 Ann. Ent. soc. America, 1909, 2, p. 182. 



Locality. — Virginia, near Washington, D. C. 



Geophilus huronicus Meinert. 

 Proc. Amer. philos. soc, 1886, 23, p. 220. 



Locality. — Russellville, Tenn. 



A northern species. The specimens from Russellville agree in 

 all essential points with Meinert's types, with which they have been 

 directly compared. The next species, mrians, is at least very close 

 also, the main difference being in the last ventral plate which is much 

 narrower than that of typical huronicus. 



Geophilus varians McNeill. 

 Proc. U. S. N. M., 1887, 10, p. 332. 



Geophilus lanius Brolemann, Ann. Soc. ent. France, 1896, 66, 

 p. 51. 



Localities. — Raleigh, N. C. (Brolemann) ; Indiana. 

 Only the type specimens known. 



