M. W. R. de V. GRAHAM 



(2) Median area of propodeum polished and virtually smooth ; plicae sharp only 

 posteriorly, otherwise represented only by foveae at the base of the pro- 

 podeum ; spiracular sulci shallow and virtually smooth. All funicular 

 segments, except sometimes the first, at least slightly transverse. (Slovakia) 



H. sp. indet. K (p. 556) 

 Median area of propodeum distinctly sculptured, reticulate, strigose-reticulate, 

 wrinkled, or with costulae ; plicae usually traceable to the base of the 

 propodeum ; spiracular sulci distinctly impressed, nearly always punctate 

 or with some transverse costulae (Text-figs. 373-389) .... 8 



(7) Genae, near base of mandibles, strongly compressed and with a sharp edge ; 



antennae usually having at most the sixth funicular segment slightly trans- 

 verse, rarely also the fifth in some dwarfs ; pronotal collar (Text-fig. 405) 

 long, medially almost or quite one fifth as long as mesoscutum. Striae of 

 clypeus extending as far as the malar sulcus, and some distance up the face. 

 Propodeum with a large reticulate nucha ; the panels of the median area 

 uniformly reticulate ..... H. chrysos (Walker) (p. 527) 



Genae nearly always terete, if slightly sharp near the base of the mandibles, 

 then all the funicular segments, except sometimes the first, are slightly 

 transverse, and the pronotal collar is very short medially .... 9 



(8) Lower edge of antennal toruli not or hardly above the level of the ventral 



edge of the eyes, toruli distinctly nearer to the anterior margin of the clypeus 

 than to the median ocellus. Propodeum at least half as long as the scutellum 

 and with a rather large, convex reticulate nucha. Postmarginal vein as 

 long as or longer than the marginal vein . . . . . . 10 



Lower edge of antennal toruli distinctly above the level of the ventral edge of 

 the eyes, toruli usually about equidistant from the median ocellus and the 

 anterior margin of the clypeus, sometimes slightly nearer to the latter. 

 Propodeum sometimes relatively shorter ; nucha large or small. Post- 

 marginal vein often not longer than the marginal vein . . . . n 



(9) Gaster lanceolate, at least as long as head plus thorax, 2-3 to 3-2 times as long 



as broad ; hypopygium extending only half way along the gaster. Flagel- 

 lum not short ; at most the distal segments of the f unicle slightly transverse ; 

 clava obviously shorter than the combined length of the three preceding 

 funicular segments. Striae of clypeus extending only slightly on to the face 

 and genae ; the latter not compressed but rounded, and without a hollow 

 above the base of the mandibles ........ 50 



Gaster ovate, not or hardly longer than the thorax, at least slightly less than 

 twice as long as broad ; hypopygium extending at least slightly more 

 than half way along the gaster. Flagellum short ; all funicular segments 

 except sometimes the first slightly transverse ; clava nearly or quite as long 

 as the combined length of the three preceding funicular segments. Striae of 

 clypeus strong, and extending some way up the face and genae ; the latter 

 compressed and tending to have a rather sharp edge, sometimes also with a 

 small hollow just above the base of the mandible ..... 93 



(9) Anterior margin of clypeus (Text-fig. 395) truncate, or sometimes even very 

 slightly curved forwards, without a median fovea, its surface flat. Gaster 

 ovate. Propodeum (cf. Text-fig. 387) medially less than half as long as the 

 scutellum ; plicae converging slightly to rather strongly in their posterior 

 part ; panels of median area relatively uniformly reticulate, costula 

 absent or very weakly indicated ; nucha short with its sculpture composed 

 of transversely-lengthened areoles. Pronotal collar sloping down some- 

 what, hence in profile forming an obtuse angle with the neck ... 75 



Anterior margin of clypeus (cf. Text-fig. 394) at least slightly emarginate, 



