[From rroc. U. S. Nat. Mm., x, 1887, pp. 254-266]. 



NOTES ON THE NORTH AMERICAN LITHOBIIDjE AND SCUTI- 



GERIDiE. 



BY CHARLES H. BOLLMAN. 



In examining the collection of myriapods belonging to the museum 

 of the Indiana University, I have found a number of species new to 

 science. On account of the confused condition of our North American 

 myriopoda, I have deemed it best to introduce a description of the 

 known species embraced in the same collection, as well as the descrip- 

 tion of those species supposed to be new to science. 



The types of the new species have been deposited in the United 

 States National Museum. 



Family A.— LITHOBIID^J. 

 Genns I.— LITHOBIUS Leach. 



The following key is only for the species in the present paper. The 

 last legs of inventus being lost, I have not included it. In counting the 

 spines I have also included the claw. 



* Posterior angles of none of the dorsal plates produced. 

 a. Penultimate pair of feet armed with three spines ; coxal pores in a single series, 

 round. 

 b. Anal pair of feet armed with one spine. 

 e. Posterior coxa? unarmed. 

 d. Prosternal teeth 4-8; joints of the antennae 20-23. 



e. Joints of the last pair of legs not provided with or produced into knots. 

 /. First pair of feet armed with 0, 1, 1 spines; claw of the female geni- 

 talia bipartite Kochii, 1. 



ff. Spines of the first pair of feet 1, 3, 2; claw of the female genitalia 



tripartite Minnesota, sp. no v., 2. 



fff. Spines of the first pair of feet 2, 2, 2-2, 3, 2; claw of the female 



genitalia whole Bilabiatus, 3. 



ee. Third and fourth joints produced into knots; spines of the first pair of 



feet2,3,2; claw of the female genitalia tripartite, Tuber, sp. nov., 4. 



dd. Prosternal teeth 10-12; joints of the antennae 24-29; spines of the first 



pair of feet 2, 3, 1-3, 3, 2; claw of the female genitalia whole; 



color, yellow brown Proridens, sp. nov., 5. 



cc. Coxa3 armed with a single spine; prosternal teeth, 4; joints of the antennas 

 20; spines of the first pair of feet 1, 2, 1-1, 3, 2; claw of the 



female genitalia tripartite Pullus, sp. nov., 6. 



bb. Anal feet armed with two spines; prosternal teeth, 4; joints of the antenna? 

 20; ocelli, 18-25; spines of the first pair of feet 1, 3, 1; claw of 



the female genitalia tripartite Trilobus, sp. nov., 7. 



bbb. Anal feet armed with three spines; coxa' with an indistinct spine; prosternal 

 teeth 4; joints of antenna' 20-31; spines of the first pair of feet 



2, 3, 2 ; claw of the female genitalia tripartite 



Cardinams, sp. nov., 8. 

 21 



