7 i4 M. W. R. DE V. GRAHAM 



i -6 times as broad as long. Stigma of fore wing rather large, separated by 

 about 2-5 times its height from costal edge of wing. . sp. indet A (p. 736) 



Antennae with flagellum not flattened ; either filiform, or more or less 

 clavate with its broadest part beyond the middle of the funicle ; middle 

 segments of funicle not or at most slightly transverse ; combined length of 

 pedicellus and flagellum sometimes greater than breadth of head ; flagellum 

 sometimes with longer hairs. Median area of propodeum usually less 

 strongly transverse .......... 



2 (1) Antennae with combined length of pedicellus and flagellum distinctly greater 



than breadth of head ; flagellum filiform, its hairs usually outstanding ; 

 first funicular segment nearly always as long as or longer than the second 

 segment, and nearly always as long as or longer than the pedicellus, 

 provided with sensilla ; sixth (last) funicular segment sometimes longer 

 than broad. Gaster nearly always oblong ...... 19 



Antennae with either combined length of pedicellus not greater than breadth 

 of head, or flagellum at least slightly clavate ; first funicular segment often 

 shorter than the second segment, sometimes anelliform and lacking sensilla, 

 most often shorter than, and at most as long as, the pedicellus ; last 

 funicular segment not longer than broad. Gaster often subcircular or 

 shortly oval ........... 3 



3 (2) Fore coxae entirely yellow, or at most dark on their outer aspect or at extreme 



base ; mid and hind coxae sometimes partly yellow .... 4 



Fore coxae usually wholly black with a metallic tinge, occasionally with their 



tips pale ............ 8 



4 (3) Basal vein of fore wing bare or virtually so. Gaster usually with a reddish 



transverse band, sometimes reduced to a spot ..... 5 



Basal vein of fore wing pilose. Gaster immaculate ..... 9 



5 (4) Antennae with scape very stout, only about 3 times as long as broad, slightly 



longer than an eye ; flagellum fuscous with funicular segments (4-) 5-6 

 yellow. 



Fore coxae entirely yellow, or at most dusky at extreme base 



campestris (Walker) (p. 735) 

 Antennae with scape slender, 5-6 times as long as broad, approximately equal 

 in length to an eye ; flagellum testaceous to brown, sometimes with the 

 funicular segments more or less spotted with fuscous dorsally ... 6 



6 (5) Mid tibia with a fuscous or black subapical ring. Combined length of 



pedicellus and flagellum barely equal to breadth of head. 



Fore coxae entirely yellow ; mid and sometimes hind coxae partly so 



annulatus (Forster) (p. 735) 

 Mid tibia entirely yellow. Combined length of pedicellus and flagellum very 



slightly greater than breadth of head ....... 7 



7 (6) Fore coxae entirely yellow, or at most slightly dusky at extreme base 



inops (Walker) (p. 735) 

 External aspect of fore coxae dark .... rufinus (Walker) (p. 734) 



8 (3) Antennae with first segment of funicle anelliform, distinctly (often much) 



shorter than the second segment, lacking sensilla . . . . . 10 



Antennae with first segment of funicle not anelliform, not or at most very 



slightly shorter than the second segment, provided with sensilla . . 9 



9 (8) Antennal flagellum slightly to quite distinctly clavate ; first funicular segment 



much shorter than the pedicellus. Gaster subcircular or shortly oval, 

 immaculate . . . . . . . . . . .10 



Antennal flagellum not clavate or, if slightly so, then gaster oblong, and 

 usually with a pale spot. First funicular segment of antennae sometimes 



