1887.] PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 265 



Last pair of feet a little more than twice as long as body, slender ; 

 tibia somewhat clavate, armed with two long, unequal spines. 



Forceps of the female moderately short, sparsely pilose, on the inner 

 side of the first joint a brush-like bunch of hair; the first joint longer 

 than last (4:3). 



Length of body 20-25'^"" ; last pair of legs ■40-55'""^ 



Habitat. — Eastern United States. 



I have examined specimens of this species from Bloomiugtou and 

 ]S"ew Harmony, Ind. Seutigera linccci, the only other species recorded 

 from the United States, is much smaller and diflers in color. 



North American species of Lithohiidcv and bcutigeridw. 



The following is a list of the North and Central American species of 

 Lithohiidcc and Scutigerida; known to date. 



I have used the following letters for the different Zoo-Geographical 

 regions as given in the Keport U. S. Entomol. Comm., No. 3: 



B = Boreal (Canadian) Province. 



E = Eastern (Athmtic) Province (n = north; s = south). 



W= "West Indian or Antillean. 



C = Central Province. 



P = Western (Pacific) Province. 



C A = Central American. 



Family A.— LITH0BIIDJ2. 

 Geuus I. — Hexicops Newport. 



1. Renkops fidvicornis (Meiiiert). E n. 



Geuus II.— LiTHOBius Leach. 

 Subgeuus Archiliihohius Stuxberg. 



2. Lithobius cardinalis Bollmau. E u. 

 8. Lithohius pulliis BoWuvAu. En. 



4. Lithobius trilobus Bollnian. E u. 



5. Lithobius bilabiatus Wood. E u. 



6. Lithobius tuber Bollmau. E u. 



7. Lithobius minnesota Bollmau. En. 



8. Lithobius paradoxus Stiixberji;. P. 



9. Lithobius obesus Stuxberg. P. 



10. Lithobius kochii Stuxberg. P. 



11. Lithobius joivensis Meiuert. E n. 



12. Lithobius exiguus Meiuert. E u. 



13. Lithobius lundii Meiuert. En. 



14. Lithobius toltecus Humb. & Sauss. C A. 

 lo. Lithobius jiusio Staxhevg. P. 



16. Lithobius proridens Bollmau. E n. 



17. Lithobius monticola Stuxberg. P. 



18. Lithobius bipunctatus (Wood). P. 



