496 M. W. R. de V. GRAHAM 



edge of the eyes. Propodeum (Text-fig. 371) less than half as long as the 

 scutellum, its nucha represented only by a narrow, transversely-striate strip. 

 Ocelli very small, each posterior ocellus separated by 3 to 3-5 times its 

 major diameter from the adjacent eye (Text-fig. 414). Malar space nearly or 

 quite two thirds the length of an eye H. microps sp. n. (p. 556) 



Either the lower edge of the toruli distinctly above the level of the ventral 

 edge of the eyes ; or the propodeum is at least half as long as the scutellum 

 and has a large reticulate nucha, the ocelli are not so very small, and the 

 malar space is relatively shorter ........ 2 



2 (1) Anterior margin of clypeus (Text-fig. 393) deeply incised medially, hence 



appearing almost bidentate. Propodeal nucha represented only by a 

 narrow, transversely-aciculate to smooth strip ..... 3 



Anterior margin of clypeus at most moderately deeply emarginate as in Text- 

 fig. 394, sometimes truncate. Note : there is often a fovea immediately 

 above the clypeal emargination, which in some lights might be mistaken for 

 an incision, see Text-fig. 394. Propodeal nucha often larger and 

 reticulate ............ 7 



3 (2) Fore wing with basal cell with at least a few scattered hairs over its distal 



third ; lower surface of costal cell with a complete row of hairs ; speculum 

 on upper surface of wing extending hardly as far as the middle of the 

 marginal vein ; postmarginal vein curved, about as long as the marginal 

 vein. Pronotal collar very short medially, less than one tenth as long as the 

 mesoscutum. POL about 1-5 OOL. Plicae of propodeum indicated only 

 at the hind margin of the sclerite .... H. janssoni sp. n. (p. 558) 

 Fore wing with basal cell bare or virtually so, basal vein usually bare ; lower 

 surface of costal cell with the row of hairs usually widely broken in the 

 middle (cf. Text-fig. 403) ; speculum on upper surface of wing extending 

 nearly or quite to the stigmal vein ; postmarginal vein straight or virtually 

 so, usually shorter than the marginal vein. Pronotal collar longer, medially 

 one eighth to one sixth as long as the mesoscutum. POL 1 -65 to 1 -8 OOL. 

 Plicae of propodeum often complete ....... 4 



4 (3) Gaster short-ovate, not or hardly longer than the thorax, only about 1-5 



times as long as broad. 



Antennal flagellum moderately stout ; proximal segments of funicle 

 quadrate, distal segments slightly transverse. (Slovakia) H. sp. indet. I (p. 556) 

 Gaster long-ovate, as long as or slightly longer than head plus thorax, 



1-75 to 2-3 times as long as broad ....... 5 



5 (4) Propodeum with plicae represented by sharp carinae on the sides of the nucha, 



and foveae at the base of the propodeum, but effaced in the middle. Anten- 

 nal flagellum stout, distinctly stouter proximally than the pedicellus in 

 dorsal view ; proximal segments of funicle subquadrate, distal segments at 

 least slightly transverse H. cionobius (Erdos) (p. 555) 



- Propodeum with plicae complete, sometimes not sharp in the middle but 



always distinct there. Antennal flagellum sometimes less stout ; proximal 

 segments of funicle sometimes slightly longer than broad ... 6 



6 (5) Antennae with scape reaching or nearly reaching the level of the vertex ; 



proximal segments of funicle usually at least slightly longer than broad, 

 occasionally subquadrate, distal segments subquadrate or at most the sixth 

 slightly transverse. 



Propodeum, Text-fig. 372 H. sequester (Walker) (p. 554) 



Antennae with scape reaching only to about level of lower edge of median 

 ocellus ; proximal segments of funicle subquadrate, distal segments 

 slightly transverse. (Czechoslovakia) . . . . H. sp. indet. J (p. 556) 



