1922.] 



51 



40 (39) Hind angles of propodemu rounded off and not margined ; ventral 



segments with long erect hairs 



.... j!)?/Hc^zcoZ/('s Mor. 



41 (38) Anterior area of propodeunj not bounded by a raised margin behind. 



42 (53) Species without a strong constriction at the base of the secoi:d 



abdominal segment; size not extremely small nor the form ex- 

 tremely narrow. 



43 (44) Mandibles not marked with tlavous ; mesonotum highly polished and 



remotely punctured ; apex of clypeus and labrum often black, but 

 in some varieties one of these or both may be flavous. 



(Fourth joint of antennae, viewed beneath, distinctly elongate ; 

 stigma either wholly brown or at least with a brown margin.) 

 .... villosiilus K. 



44 (43) Mandibles with a flavous mark like the apex of the clypeus; meso- 



notum in some species not highly polished nor sparsely punctured. 



45 (46) Stigma very pale, its lower margin yellowish, at most somewhat 



darker than the disc ; 4th antennal joint, viewed beneath, not at all 

 elongate, the following ones wider than long. 



(Mesonotum shining, the punctures very feeble, more or less 

 indefinite in outline, and remote, face suboval.) 

 .... brevicornis Sch. 



46 (45) Stigma with the lower margin at least conspicuously dark, or brown ; 



4th antennal joint, viewed beneath, generally distinctly elongate. 

 (Face either broad and round or else conspicuously elongated.) 



47 (48) Face broad and round paiiperatus Brulle { = breviceps E. S.). 



48 (47) Face narrow and elongate. 



49 (50) Hind metatarsus wholly, or at least on its basal portion, whitish 



yellow punctatissimus Sch. 



50 (49) Hind metatarsus yellowish brown, brown or nearly black. 



51 (52) Mesonotum on the disc finely and closely punctured, minutely sculp- 



tured between the punctures so as to be only moderately shining at 

 most; lacinia of genital armature very short 



.... punctatissimus var. 



52 (51) Mesonotum on the disc shining and more strongly punctured ; lacinia 



long angitsticeps Perk. 



53 (42) A strong constriction at the base of the 2nd abdominal segment ; a 



very minute and narrow species; hind tarsi in normal examples 

 dark or fuscous minutissinius K. (\a.Y. = arnoldi J E. S.). 



54 (37) Antennae long and slender, reaching, when the head is laid back, 



beyond the brow of the propodeum ; 5th and 6th joints strongly 

 elongate. 



55 (56) 3rd, 4th, and 5th ventral segments with a tuft of dense, long hairs on 



each side, the two latter comparatively glabrous between the tufts. 



(Anterior area of the propodeum very finely sculptured on its 

 posterior part at least, where the surface appears merely granulate, 

 or the whole area may be thus sculptured and without distinct 

 wrinkles; hind metatarsi usually clear testaceous, rarely dark.) 

 .... nitidiusculus K. 



