242 



U. S. NATIONAL MUSEUM BULLETIN 216 



Figure 144. — Localities for 

 Exochus transversus. 



second lateral area of propodeum with a few hairs basally, laterally, 

 and in its apicolateral corner; hind femur about 1.94 as long as deep; 

 front spur of hind tibia about 2.6 as long as wide. 



Black. Wide transverse band on upper margin of face, small spot 

 at top of eye, mouth parts, tegula, and narrow hind corner of pro- 

 notum, pale yellow, the tegula with a postmedian fulvous area; 

 antenna brown beneath; pleura with a small fulvous-tinged area next 

 to each coxa; front and middle legs fulvous, yellowish on apices of 

 their coxae and femora and on basal half of tibiae; hind coxa, tro- 

 chanters, and femur fulvous, the femur without an apical yellowish 

 area; hind tibia fulvous below, laterally and above infuscate on its 

 basal 0.19± and apical 0.43 ±, the rest whitish; hind tarsus pale 

 stramineous, a little darkened apically and on the apex of the first 

 four segments. 



Male: A number of males that may belong to this species differ 

 from the females in having the face and clypeus a little less convex 

 and the pale yellow markings much more extensive, including the 

 face, clypeus, cheek, large hind corner of pronotum, prepectus, mes- 

 osternum, and other areas. It has not been possible to decide whether 

 these males belong to the present species, to E. signifer, or to both 

 species and/or to possibly a third species. 



Type: 9, Saskatoon, Sask., June 22, 1923, N. J. Atkinson (Ottawa). 



Paratype: 9, Waubamick, Ont., June 16, 1915, H. S. Parish (Ithaca). 



40. Exochus postfurcalis, new species 



Figures 190,f; 195,c 



Front wing 3.9 to 4.4 mm. long; combined face and clypeus about 

 1.20 as high as wide in male, about 1.08 as high as wide in female, 

 rather strongly and very evenly convex in both vertical and horizontal 



