510 



U. S. NATIONAL MUSEUM BULLETIN 216 



Figures 235-237.- 



-Localities: 235 (left), Xorides rileyi; 236 (center), X. rudis; 

 237 (right), X. planus. 



fused briefly at base of areola (figs. 315,a,b. Sometimes most of the 

 propodeal carinae are obsolescent); area dentipara with a blunt or 

 indistinct tooth at its apex; front tibia of female strongly inflated, 

 cylindric except in its basal third; spinelike bristles on front face of 

 female tibia weak, numerous (fig. 313,f,g); comb on apex of front 

 side of front tibia with moderately weak bristles; first tergite excep- 

 tionally flat, evenly expanded from base to apex, usually without a 

 distinct oblique groove beyond the spiracle but sometimes such a 

 groove is weakly indicated; second tergite evenly convex except for 

 a relatively weak oblique groove that cuts off a small basolateral 

 corrier. The female flagellum never has a white band. 



This is a Holarctic group, containing five Nearctic species and 

 several in Europe. Among the European species is Xorides ater, the 

 genotype of Rhadinopimpla (=Rhadina, preoccupied). X. ater is 

 very closely related to the Nearctic X. insularis. 



8. Xorides (Xorides) rudis, new species 



Female type: Front wing 6.7 mm. long; frons with rather close 

 punctures and transversely rugulose; punctures on top of head of 

 moderate size, sharp, separated by about 0.7 then diameter, postero- 

 laterally their interspaces lined up as weak oblique rugulae; temple 

 mat and with vertical fine striae, also with scattered, moderately 

 small punctures; thorax moderately depressed, 2.9 as long as high, 

 its mesoscutum and scutellum weakly convex; mesoscutum sub- 

 polished, with moderate sized, close punctures, somewhat rugulose 

 along the notauli; mesosternum and mesopleurum mat with a sugges- 

 tion of aciculation and with moderately small punctures that are 

 separated by about their diameter; areola pentagonal, a little more 



