THE MYKIAPODA OF NORTH AMERICA. I»9 



especially the 7— 13th, an ovate depressed poriferous area along the an- 

 terior margin, into which projects a conical elongation of the preceding 

 segment; cox;e of prehensorial legs of about equal length and breadth. 



Habitat. — Natural Bridge, Va.; L. M. Underwood. 



Type. — IT. 8. Nat. Museum. 



As is indicated by the above diagnosis, this new species is closely re- 

 lated to G. mordax. 



My specimen is a male, and as G. mordax is described from a female 

 the following secondary differences are worthy of notice: 



Anal legs moderately crassate, densely and shortly pilose; claw 

 large; pairs of legs 49; length 35""". 



If the characters given in this diagnosis are those peculiar to a male, 

 this new species must be identical with mordax, but the proportions of 

 the coxa* of prehensorial legs seem to convince me that they are not 

 markings peculiar to a male. 



27. Geophilus smithi, sp. nov. 



Diagnosis. — Related to G. huronicus, but the coxal pores more numer- 

 ous, 25-30; coxae of prehensorial legs of about equal length and width; 

 pairs of legs of female 49; length 20-28""". 



Habitat. — Washington, I). C; J. B. Smith. 



Type. — U. S. Nat. Museum. 



This species is very closely related to G. huronicus, but it seems to 

 be sufficiently distinct as shown by the number of coxal pores, which 

 are 25-30 in number in smithi, but only 7 or 8 in huronicus; also by the 

 number of pairs of legs {huronicus, $ 53-55, 9 55-57). 



This species is described from two females, one of which is an adult, 

 the other being about three-fourths grown. 



28. Geophilus bipuncticeps Wood. Macon, Ga. ; L. M. Underwood. 

 Pairs of legs, $ r^, 9 55-59. 



29. Scolopocryptops sexspinosus Say. 



Scolopoeryptops georgicus Meiuert, Proc. Anier. Phil. Soc, 180, 1886 (Georgia). 

 Ace. 19542, 24. Tallulah, Ga. ; L. M. Underwood. Ace. 19542, 14, Indian 

 Springs, Ga. ; L. M. Underwood. Lnray, Va. ; L. M. Underwood. 



The specimens contained in the first two vials seem to belong to that 

 phase of 8. sexspinosus which has been described by Meinert uuder the 

 name of 8. georgicus. The only real tangible difference I can find be- 

 tween these specimens and the true sexspinosus is in the moderately 

 toothed condition of the prosternum. and I think it is best to consider 

 georgicus as not a valid species. 



30. Theatops posticus Say. Ace. 19542, 3, Macon, Ga. ; L. M. Underwood. Lara; 



and Natural Bridge, Va.; L. M. Underwood. 



31. Cryptops hyalinus Say. Natural Bridge, Va., and Lookout Mountain; L. M, 



Underwood. 



Serra hires of anal legs 6-2, 



