ART. 26 WASPS OF SUBFAMILY PSENINAE MALLOCH 41 



longitudinally, with some transverse lines centrally, which divide the 

 central area leaving no conspicuous glossy central diamond-shaped 

 space, and the entire posterior face is quite coarsely reticulate, which 

 sculpture extends to or almost to the lateral edges of the enclosure. 



Length, 7-9 mm. 



Originally described from the male taken in the Hudson Bay Ter- 

 ritory, and subsequently both sexes were described by Fox from the 

 same region. I have before me both sexes from Bilby, Alberta, June 

 28 and July 15, 1924 (Owen Bryant). 



I have also a male specimen that appears to be referable here, but 

 the upper part of the mesopleura (eps 2) is not definitely longitu- 

 dinally striate and is instead rugoso-reticulate. I consider this 

 specimen may be merely a variety of horealis. Locality, Nelson, 

 N. H., September 1, 1907, no collector's name (U.S.N.M.). 



PSEN (MIMESA) CINGULATUS (Packard) 



Mimesa cmgulata Packard, Proc. Eut. Soc. Philadelphia, vol. 6, p. 410, 1867. 

 (Male.) 



I have not seen the type of this species, nor was it examined by 

 Mr. Rohwer. I have, however, one specimen that I place here with 

 much doubt. It has the femora partly browned, but in other char- 

 acters agrees very well with the description. 



Length, 7 mm. 



Originally described from Brunswick, Maine. The National Mu- 

 seum specimen is from Colorado (Baker). 



PSEN (MIMESA) PAUPER (Packard) 



Plate 1, Figure 18 



Mimesa pauper Packaed, Proc. Ent. Soc. Philadelphia, vol. 6, p. 409, 1867. 



(Male.) 

 Mimesa paupera Provaacher, Nat. Can., vol. 13, p. 79, 1882. (Male and female.) 



A rather small species which appears to be widely distributed 

 throughout the Northeastern United States and Canada, extending 

 as far west as Illinois. In the general coloration and habitus it 

 closely resembles the species which I accept as gregarius, but the 

 abdomen in both sexes has only the apex of the first and all second 

 tergite red, this feature in the female being quite distinctive. The 

 propodeum is very much coarser sculptured than in gregarius and 

 wiichictus, the enclosure being coarsely rugoso-reticulate, and the 

 lateral areas similarly but more finely sculptured almost to the edges 

 of the enclosure. The petiole of the abdomen varies slightly in length 

 and thickness, but it is never noticeably longer than the swollen part 

 of the segment, and is sharply carinate on the dorsolateral and ven- 

 trolateral edges, with the sides almost straight. 



