172 G. E. J. NIXON 



3 Tergite i very long, highly polished ; propodeum, in contrast, dull, sculptured. 



Temples coarsely, densely punctate ; inner spur of the hind tibia not reaching 

 middle of basal segment of tarsus ; ovipositor sheath markedly falcate towards 

 apex, about one and a half times longer than the hind tibia and, seen from above, 

 clothed with a dense, not in the least upstanding pubescence ; hind femora 

 yellow ............. 4 



- Tergite i shorter, lacking this highly polished appearance and, if somewhat smooth, 



then the propodeum is not dull and is without such coarse sculpture ... 5 



4 Larger, 3 -2 mm. without ovipositor ; stigma very dark, emitting radius more distal to 



middle ; face somewhat flat ; disc of scutellum with larger, more numerous 

 punctures .......... odites sp. n. (p. 175) 



- Smaller, 25 mm. without ovipositor ; stigma somewhat pale, emitting the radius 



nearer to middle ; face distinctly a little swollen on each side ; disc of scutellum 



with fewer, more indistinct punctures ..... inops sp. n. (p. 179) 



5 Eyes large, the shortest distance between a posterior ocellus and the eye-margin being 



distinctly less than twice the longer diameter of the ocellus ; face only very slightly 

 wider than high, 6:5. 



Ovipositor sheath hardly one and a quarter times longer than the hind tibia, 

 clothed with long, very sparse, upstanding hairs . . . lampe sp. n. (p. 180) 



- Eyes of normal size, the shortest distance between a posterior ocellus and the eye- 



margin being fully equal to twice the longer diameter of the ocellus ; face much 

 more transverse ............ 6 



6 Gaster beyond tergite 1 bright reddish-yellow ; ovipositor sheath about one and a 



quarter times longer than the hind tibia 



Hind coxa bright reddish-yellow ; propodeum smooth, polished ; ovipositor 

 sheath clothed with long, sparse, upstanding hairs . . diaphantus sp. n. (p. 175) 



- Gaster dark throughout ; ovipositor sheath considerably longer than this . . 7 



7 Tergite 1 dull red ; propodeum highly polished, smooth ; ocelli in a low triangle, the 



transverse, posterior tangent to the anterior ocellus obviously cutting the posterior 

 pair. 



Hind tibia and hind tarsus unusually stout ; posterior width of tergite 1 dis- 

 tinctly greater than the length of the median field of tergite (2 + 3) 



anticlea sp. n. (p. 178) 



- Tergite 1 as dark as, or darker than, the rest of the gaster ; propodeum less smooth, 



normally with some sort of weak rugosity almost everywhere (some large, polished 

 areas in calycinae) ; ocelli in a higher triangle, the posterior tangent to the anterior 

 ocellus touching but not distinctly cutting the posterior pair. .... 8 



8 Wings strongly embrowned ; the three basal cells of the fore wing densely setose 



right to base ; hind tibia and hind tarsus almost black ; maxillary palpi strikingly 

 white ............. 9 



- Wings at most faintly tinted ; the three basal cells of the fore wing much less densely 



setose ; the anal cell only very sparsely setose towards base ; hind tibia and hind 

 tarsus much paler ; maxillary palpi not thus strikingly white . . . . 10 



9 1st abscissa of the radius distinctly shorter than the transverse cubitus ; tergite 1 not 



conspicuously wedge-shaped and without a wholly differentiated, polished, 

 posterior tip ; tergites 4 and 5 with a broad, thin, membranous apical margin 



pycnos sp. n. (p. 179) 



- 1st abscissa of the radius not shorter than the transverse cubitus ; tergite 1 con- 



spicuously narrowed behind, wedge-shaped and its tip differentiated as an oval, 

 polished area (Text-fig. 188) ; tergites 4 and 5 without such a thin, membranous 

 apical margin ........ phaenna sp. n. (p. 179) 



10 Vannal lobe beyond its widest part with straight edge and here without trace of 

 projecting hairs ; hind femur almost entirely yellow ; mesoscutum strongly 



