COLLETID.E. 185 



Tersely towarrls the apex ; apex of poeterior tibisp, and a 

 large spot on the inner margin of the intermediate tibite, 

 black. 



? exceedingly like that of Masoni, but with the basal 

 segment of the abdomen almost impunctate, or only very 

 finely punctured at the sides, and the apical segments more 

 clothed with brownish white hairs. 



L. 5-6 mm. 



Barham ; [Kirbi/). Pakefield, near Lowestoft, August, 

 1859, on flowers of the bramble; Blackwater, Hants; 

 (Smith). Arundel; (Sterens). Bournemouth; (Dale). 

 F. Smith, in his Cat. Brit. Hym. Brit. Mus. 2ad ed., says of 

 the examples found by him at Pakefield : " I also observed 

 it entering its burrows, which were excavated in stems of 

 the common dock ; the following summer I reared both 

 sexes from these nests." These specimens I have seen and 

 they are labelled " bred," so I feel certain that the ? here 

 described is the correct one. • 



P. communis, N>jl. (rvpesins, Smith). — Black, head 

 and thorax deeply punctured, clothed with short inconspicu- 

 ous erect hairs, the surface between the punctures dull and 

 finely aciculate, face in the c? slightly shining, clypeus down 

 the centre only, or rarely entirely, and the sides of the face, 

 yellow, the lateral spots somewhat encircling the antennal 

 cavities, scape rarely with a yellow spot ; ? with only an 

 elongate triangular spot on each side of the face yellow, 

 wings hyaline, scutellum more largely and remotely punc- 

 tured than the mesopcutum, postscutellum subrugose, pro- 

 podeum longitudinally rugose ; abdomen shining, basal 

 segment almost impunctate, without any apical white hairs 

 at the sides, rest finely punctured, seventh ventral segment 

 in the S bilobate at the apex, the lobes concave and fringed 

 with long hairs, eighth terminating in a narrow bifid 

 process, armature with the stipites short and bluntly 

 rounded, the sagittaj extending beyond them ; c? with the 

 anterior tibiae in front, the posterior tibiae at the base, 



