104 HYMENOPTERA. 



separated by two or three times the diameter of one puncture ; scutel- 

 lum similarly, but more sparsely punctured ; metanotum finely rough- 

 ened. Bowl of enclosure of propodeum long and narrow, not widened 

 abruptly at base of neck, surface smooth, not pitted, margin indis- 

 tinct ; neck of enclosure medium sized, not broad ; lateral areas of 

 posterior face smooth, not punctured, microscopically wrinkled ; sides 

 similar. Mesopleura extremely sparsely punctured, with small round 

 punctures as on mesoscutum, separated by three to five times the 

 diameter of one puncture ; metapleura almost smooth, not depressed. 

 Abdomen impunctate, not glossy. 



Yellow Markings .—hateral face marks very broad and short, filling 

 lateral areas, ending abruptly on level with upper level or antennal 

 sockets ; supraclypeaf mark broad, not extending up between antennal 

 sockets, (fig. 106); stripe on front of scape yellow. Thorax dark, ex- 

 cept for a small spot on tubercles; legs with front of fore tibiae, base 

 of hind tibiae, and all basitarsi yellow. 



Genitalia. — Very distinct; armature stout; cardo very short and 

 small, superior lobe of stipes inconspicuous, apical part swollen, point- 

 ing mesad at tip, and with long coarse hairs ; sagittae and volsella not 

 peculiar, (fig. 35). Seventh ventral plate of the same general type as 

 that of modestus, but apical portion of wings not attenuated, and 

 basal lobe long, extending out at an angle of about forty-five degrees, 

 and bearing an apical tuft of fine hairs ; lateral and apical marging 

 with a fringe of heavy hairs, (fig. 31). Eighth ventral plate similar to 

 that of P. basalts, but smaller, (fig. 33). 



Female. — Unknown. 



Habitat. — Unique type from Montreal, Queb., June 10, 

 1906. In collection of C. F. Baker, Pomona College. 



This species resembles members of the "Modestus Divis- 

 ion" in size, and form, but is very different from any of 

 these. Its broad face, and rudimentary eighth ventral plate 

 resemble those of P. basalts, from which it is easily told by 

 the scape and puncturation. The genital armature, and both 

 ventral plates are easily distinguished from any of the other 

 species. Probably the face marks will be found somewhat 

 variable in a series, for they are not clear cut, as the figure 

 shows. Likewise the puncturation may not be uniformly 

 faint and sparse, but the form of the propodeum will probably 

 be constant. Possibly this is one of the species which has 

 been described before, but is indistinguishable from the 

 modestus group in the description ; or it may be included in 

 the list of uncertain forms at the end. In any case it is un- 

 recognizable from the previous description. 



