522 M. W. R. de V. GRAHAM 



than breadth of head ......... 52 



51 (50) Fore wing with postmarginal vein about as long as, or slightly shorter than, 



the marginal vein .......... 54 



- Fore wing with postmarginal vein distinctly longer than the marginal vein 52 



52 (51) Fore wing with row of hairs on lower surface of costal cell interrupted medially 22 



- Fore wing with row of hairs on lower surface of costal cell complete . . 53 



53 (52) Fore wing with speculum, on upper surface of wing, extending hardly beyond 



the base of the marginal vein, the latter at most 1-25 times as long as, and 

 sometimes not longer than, the stigmal vein. Antennal scape just reaching 

 the vertex ; combined length of pedicellus and flagellum hardly greater 

 than breadth of head. Gaster immaculate or with a small pale spot 



H. bedeguaris Thomson (p. 527) 



- Fore wing: either the speculum, on upper surface of the wing, extends below 



the marginal vein for at least half the length of the latter ; or else the mar- 

 ginal vein is at least 1-5 times as long as the stigmal vein. Antennal scape 

 sometimes not reaching, or reaching above the vertex ; combined length of 

 pedicellus and flagellum often distinctly greater than breadth of head. 

 Gaster often with a distinct pale spot ....... 54 



54 (53) Median area of propodeum as long as broad, about two-thirds as long as the 



scutellum ; nucha large, its length slightly more than one third that of the 

 propodeum, its sculpture composed of strong reticulation with subcircular 

 areoles ; posterior portions of plicae, on sides of nucha, parallel and relatively 

 long. Antennal scape distinctly shorter than an eye, hardly reaching the 

 vertex ; combined length of pedicellus and flagellum slightly greater than 

 breadth of head ; flagellum fuscous. Gaster oblong, at least twice as long 

 as broad ..... PSceptrothelys parviclava sp. n. (p. 487) 



- Median area of propodeum at least slightly broader than long, relatively 



shorter than in the above ; nucha occupying at most one third the length 

 of the propodeum, its sculpture composed of weaker reticulation whose 

 areoles are more or less lengthened in the transverse axis ; posterior por- 

 tions of plicae, on sides of nucha, often converging slightly, sometimes 

 relatively short ........... 55 



55 (54) Antennal scape (Text-fig. 421) with a small boss-like expansion on its front 



edge, above the middle ; the scape reaching virtually to, or slightly above, 



the vertex ............ 64 



- Antennal scape without an expansion on its front edge, sometimes not reaching 



the vertex ............ 56 



56 (55) Antennal scape distinctly shorter than an eye ...... 57 



- Antennal scape as long or virtually as long as an eye .... 65 



57 (56) Gaster immaculate .......... 58 



- Gaster with at least a small yellowish spot, or with the ventral plica pale 



medially ............ 59 



58 (57) Antenna with combined length of pedicellus and flagellum about 1-3 times 



the breadth of the head ; flagellum very slender, hardly stouter than the 

 pedicellus in dorsal view ; funicular segments elongate, the first 2 to 2-25 

 times, the sixth 1 -6 to 1 -7 times, as long as broad. Head and thorax green 



H. parietinae sp. n. (p. 553) 

 Antenna with combined length of pedicellus and flagellum only i-i to 1-15 

 times the breadth of the head ; either the flagellum is less slender, or has 

 shorter funicular segments. Head and thorax most often bronze-green or 

 bronze ............ 60 



59 (57) Antenna with combined length of pedicellus and flagellum about 1-3 times 



the breadth of the head ; clava at least slightly shorter than funicular 



