286 M. W. R. de V. GRAHAM 



and the speculum on the upper surface of wing extends to the stigmal vein ; 



or the head and thorax are almost entirely bright green or blue ... 49 



49 (48) Marginal vein of fore wing (Text-fig. 263) 2-5 to 2-8 times as long as the stigmal 



vein ; speculum, on upper surface of wing, extending right to the stigmal 

 vein ; head and thorax a less bright blue or green, the scutellum and axillae 

 often bronze, mesoscutum and scutellum not very shiny crassus Walker (p. 314) 



- Marginal vein of fore wing 2-2 to 2-3 times as long as the stigmal vein ; 



speculum, on upper surface of wing, extending below the marginal vein to 

 only about half the length of the latter ; head, and thorax except pronotum, 

 bright green or blue, mesoscutum and scutellum rather shiny 



torymiformis (Ratzeburg) (p. 311) 



50 (2) Propodeum with plicae, which are sharp at least in the hinder half of the 



sclerite ; median carina sharp and straight. Basal cell of fore wing in 

 female bare, or with at most four scattered hairs in its distal part. Side- 

 lobes of mesoscutum, like the mid-lobe, with numerous piliferous punc- 

 tures. 



Fore wing venation, Text-fig. 264 . . puncticollis (Thomson) (p. 324) 



Propodeum without plicae ; median carina sometimes absent. Basal cell of 

 fore wing in female with its distal third to half pilose. Side-lobes of meso- 

 scutum tending to be more sparsely hairy than the mid-lobe . . . 51 



51 (50) Propodeum medially nearly one fifth as long as scutellum, without a median 



carina. Antennae with combined length of pedicellus and flagellum slightly 

 greater than breadth of head ; first funicular segment as long as or slightly 

 longer than second segment, quadrate to 1-7 times as long as broad; at most 

 the fourth and fifth funicular segments slightly transverse. POL 1 -5 to 1 -7 

 OOL. 



Fore wing venation, Text-fig. 265 . . . indivisus sp. n. (p. 324) 



- Propodeum medially at most slightly more than one seventh as long as scutel- 



lum, its median carina more or less indicated. Antennae with combined 

 length of pedicellus and flagellum slightly less than breadth of head ; all 

 funicular segments slightly transverse, the first slightly shorter than the 

 following ones. POL about twice OOL . . . walkeri sp. n. (p. 326) 



52 (1) Gaster including ovipositor sheaths not or hardly longer than the thorax ; 



sheaths, as seen in dorsal view, only slightly exserted and not projecting 

 beyond the level of the tips of the pygostylar bristles. Anterior margin of 

 clypeus evenly curved. Marginal vein of fore wing 2-1 to 2-5 times as long 

 as the stigmal vein. Combined length of pedicellus and flagellum slightly 

 less than the breadth of the head ; second funicular segment at least slightly 

 transverse, distal segments strongly so . . . latifrons (Thomson) (p. 324) 



- Ovipositor sheaths in dorsal view projecting at least slightly beyond the level 



of the tips of the pygostylar bristles ; either the gaster including ovipositor 

 sheaths is longer than head plus thorax, or the marginal vein is 2 -8 to 3 -3 times 

 as long as the stigmal vein ......... 53 



53 (52) Anterior margin of clypeus produced, but truncate or even weakly emarginate 



medially. Marginal vein of fore wing (Text-fig. 266) 2-8 to 3-3 times as long 

 as the stigmal vein ; on the upper surface of the wing the speculum extends 

 as a broad bare strip below the marginal vein, as far as the stigmal vein, and 

 the radial cell is also bare. Exserted portion of ovipositor sheaths, in pro- 

 file, from two fifths to slightly more than half as long as the hind tibia 



compressus Walker (p. 323) 



- Anterior margin of clypeus evenly curved. Marginal vein of fore wing some- 



times relatively shorter ; speculum on upperside of wing, below the 





