84 BULLETIN 46, UNITED STATES NATIONAL MUSEUM. 



7. Geophilus umbraticus McNeill. 

 Very common. 



8. Geophilus perforatus (MeNi'ill). 



Schemlyla pcrforata McNeil!, Proc. U. S. Nat. MILS., 325. 1887 ( Pcnsucola , Fla.). 



Two specimens were obtained. 



9. Scolioplanes bothriopus (Wood). 

 Only one specimen. 



10. Scolioplanes ruber Uolluian. 



11. Scolioplanes gracilis, sp. nov. 



Frontal plate present. Orange, head and antenna' brovMiish. 

 Slender, strongly attenuate anteriorly, less so posteriorly; smooth, 

 s parsely pilose, feet more densely. Prehensorial feet sparsely pilose; 

 sternum subcordiform, wider than long (5: 2. 3); coxa twice as wide as 

 long, unarmed ; last joint unarmed ; claw moderately curved, excavated 

 beneath, as long as the head is wide. Cephalic plate subquadrate, of 

 almost equal length and width, posterior margin concealed by basal 

 plate; prebasal plate concealed; basal plate four times as wide as long 

 (4.5: 1.2). First pair of feet short, anterior and posterior subequal. 

 Posterior coxa rather strongly inflated, pilose; pores few, large and 

 small, placed in two irregular rows along the ventral plate, which is 

 very wide, sides rapidly converging and substraight. Last pair of 

 feet of male rather slender, armed; of female somewhat more slender 

 and armed. Pairs of feet of <5 , 80; of 9, 83. Length of body $ ? 

 34.5'""', width, 0.5"""; 9 , 53.5""", width, 1.4""". 



This species ought to form a new genus, but having only an adult 

 female and a young male, I have not been able to examine the mouth- 

 parts. 



It differs from ScolioplancK in the characters of the cephalic plate, 

 prehensorial feet, and the last ventral plate and pair of feet. 



12. Scolopocryptops sexspinosiis (Say). 



Specimens from this locality, as well as those from more Southern 

 ones, differ in some important details from the Northern specimens, 

 principally in having the last pair of legs more slender and the last 

 ventral plate narrower; but these characters do not seem to warrant 

 the formation of a different species. 



13. Scolopocryptops nigridius McNeill. 



14. Theatops crassipes (Mcincrt). 



Two specimens obtained, which agree with specimens from Florida, 



15. Cryptops hyaliiius Say. 



16. Lithobius Braniieri tollman. 



Four specimens were found here. 



17. Lithobius caecus, sp. iiov. 



