THE MYKIAPODA OF NORTH AMERICA. 



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

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

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



Habitat. Natural Bridge, V;\.: L. M. Underwood. 



Type. K. S. Nat. Museum. 



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

 lated to d. HH-(l(l.r. 







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 40; length ;;."">""". 



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. 



Diaynosix. Related to (f. huronicnf<\ but the coxal pores more numer- 

 ous, 25-;>0: coxa* of prehensorial legs of about equal length and width; 

 pairs of legs of female 40; length L'0-28""". 



Habitat. Washington, !).<'.; J. B. Smith. 



Tu)H'. V'. S. Nat. Museum. 



This species is very closely related to (f. hitronicHS, but it seems to 

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

 are 25-,'JU in number in xmithi, but only 7 or S in luirotiicii.s; also by the 

 number of pairs of legs (Introiiii'iix. t 5;>-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 bipuucticeps Wood. Macon, <J;i. ; L. M. 1'uderwood. 

 Pairs of legs, $ 55, 9 55-51). 



29. Scolopocryptops sexspinosus Say. 



Scolopocryptops georgicus WLeinert, 1'roc. Anu-r. IMiil. Sue., iso. issii ((,<-ur<i\tn. 

 Ace. 195 1L>, 24. T.-illiilab. Ga. ; L. M. I'udi-i-wood. Ace. 19542, 14, Indian 

 Springs, G a. : L. M. Underwood. Lnra y. \';i. ; L. M. Underwood. 



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

 phase of N. NC-vxpinoxHx which has been described by Meinert under the 

 name of S'. ycoryicus. The only real tangible difference 1 can find be- 

 tween these specimens and the true xr.rsitiiioNH* is in the moderately 

 tool lied condition of the iii'osteruum. and I think it is best, to consider 

 in as not a valid species. 



30. Theatops posticus S:iy. A<T. HTdL'. :'., Macon, < Ja. ; I-. M. I inler\\ ood. l.nra\ 



and Natural Bridge, \"a.; I,. M. I'ndenvood. 



31. Cryptops hyalinus Say. \alni 'al Bridge, Va.. and I ..... kont Moiuilain: ],. M. 



I nilcrxvood. 



Serratnres of anal legs >-L', 



