5 o6 M. W. R. de V. GRAHAM 



length 2-5 to 5-5 mm., but usually more than 2-5 mm. .... 43 



42 (41) Gaster 1-65 to 2-i times as long as broad. Head and thorax green, blue-green, 



or golden-green. Fore wing with speculum, on upper surface, reaching 

 nearly or quite to the stigmal vein ; venation pale yellowish. Antennae 

 with sensilla in one row on all segments of the funicle. Panels of median 

 area of propodeum reticulate, often irregularly . H. decipiens sp. n. (p. 548) 



- Gaster 2-5 times as long as broad or more. Head and thorax bronze, olive-green, 



or dark bluish. Fore wing with speculum, on upper surface, not nearly 

 reaching the stigmal vein ; venation often relatively dark. Panels of 

 median area of propodeum often irregularly sculptured, with coarser 

 wrinkles, or partly smooth ......... 43 



43 (42) Antennal scape reaching at least to level of middle of median ocellus. Head 



distinctly broader than mesoscutum. Scutellum discally nearly or quite 

 as coarsely reticulate as the inner half of the axillae .... 44 



Antennal scape reaching at most to level of lower edge of median ocellus. 

 Head hardly broader than mesoscutum. Scutellum discally finely to very 

 finely reticulate, not more coarsely than the outer half of the axillae . . 45 



44 (43) Body mainly deep blue or greenish blue. Propodeum (Text-fig. 378) with 



posterior part of plicae, at sides of nucha, hardly convergent. Pronotal 

 collar with an abrupt edge anteriorly, sometimes slightly margined in the 

 middle . . . . . . . H. berylli (Walker) (p. 544) 



- Body green, bronze- or coppery green. Propodeum with posterior part of 



plicae strongly convergent (as in Text-fig. 379). Pronotal collar usually 

 somewhat rounded off in front, at least in the middle H. musaeus (Walker) (p. 540) 



45 (43) Postmarginal vein of fore wing as long as or slightly longer than the marginal 



vein. Propodeum (Text-fig. 379) with panels of median area quite strongly 

 sculptured, for the most part very finely reticulate ; median carina raised to 

 form a tooth subbasally. Gaster 1 • 1 to 1 -6 times as long as head plus thorax 



H. elevatus (Walker) (p. 538) 



- Postmarginal vein slightly shorter than the marginal vein. Propodeum (Text- 



fig. 380) with median area relatively shiny, its sculpture, apart from some 

 irregular wrinkles, weak ; median carina not raised into a tooth. Gaster 

 from as long as, to 1-3 times as long as, head plus thorax 



H. myopitae sp. n. (p. 540) 



46 (32) Postspiracular sclerite quite strongly reticulate except along its edges. 



Spiracles of propodeum small and oval, hardly 1 -5 times as long as broad. 

 Ocelli moderate-sized, the posterior ones separated by less than twice their 

 major diameter from the eyes. Plicae of propodeum weak anteriorly 



H. conopidarum (Boucek) (p. 559) 

 Postspiracular sclerite shiny, w r eakly and irregularly sculptured or partly 

 smooth, with an impression along its front edge. Spiracles of propodeum 

 relatively larger or more elongate. Ocelli small, the posterior ones separated 

 by 2 to 2-5 times their major diameter from the eyes .... 47 



47 (46) Propodeum with plicae sharply defined throughout. Tibiae broadly infuscate 



medially. Middle segments of gaster hardly tinged with purplish. Basal 

 cell of fore wing with a few hairs distally, the basal vein also pilose. Scutel- 

 lum rather more convex than in the following species. (Alten, Finmark) 



H. rhinthon (Walker) (p. 525) 

 Propodeum (Text-fig. 381) with plicae weak or effaced in the middle or 

 anteriorly. Tibiae usually wholly yellowish, rarely faintly infuscate 

 medially. Middle segments (tergites two to four) of gaster mainly to entirely 

 purplish. Basal cell of fore wing bare ; basal vein pilose or bare. Scutel- 

 lum rather weakly convex ......... 48 



