FAMILY STRATIOMYID.T: THE SOLDIER FLIES 139 



10. Antennas situated at most a little below the middle of the head in pro- 



file; scutellum never with two spines 13 



Antennas situated far below the middle of the head, near the lower edge 

 of the eyes; scutellum with at least a pair of spines 11 



11. Third antennal segment not furcate; scutellum bispinose 12 



Third antennal segment furcate, the upper branch with a terminal arista 



and a lateral process (72, 78) Neochauna Williston 



12. Eyes bare Psegmomma Enderlein 



Eyes pilose (6, 86) Acanthinomyia Hunter 



13. Third vein branched 15 



Third vein simple l"! 



14. Third antennal segment elongate (.55, 56) Berkshiria Johnson 



Third antennal segment short, as broad as long (54, 58). 



Zabrachia Coquillett 



15. Third antennal segment elongate 1^ 



Third antennal segment as wide as long or nearly so 17 



16. Scutellum prolonged and obtusely pointed, without conspicuous rim on 



lower edge Cynipimorpha Brauer 



Scutellum broadly rounded apically and with a strong rim on the lower 

 margin (55, 56) Berkshiria Johnson 



17. Scutellum prolonged, its sides more or less parallel apically or triangu- 



lar with a very broad preapical depression, the lower edge not mar- 

 gined (4, 5, 60) Psephiocera Enderlein 



Scutellum rounded apically, its lower edge sometimes very strongly 

 margined 18 



18. Arista short plumose or with very long pubescence of isolated hairs 



( 49 ) Lophoteles Lcew 



Arista short pubescent or bare 19 



19. Antennse arising at most slightly below the middle of the head 20 



Antennae arising conspicuously below the middle of the head (61). 



Pachygaster Meigen 



20. Scutellum with a strong marginal rim below 21 



Scutellum with at most a very weak rim below (27, 57). 



Neopachygaster Austen 



21. Rim of scutellum strongly serrate (62) *Eupachygaster Kertesz 



Rim of scutellum so finely serrate as to appear smooth except under 



high magnification (41, 51) Gowdeyana Curran 



22. All the posterior veins arise from the discal cell 23 



The fourth posterior vein arises from the second basal cell 39 



23. Scutellum with spines 24 



Scutellum without spines, sometimes denticulate 32 



* T have not seen the type of this European genus and it may be that the species 

 described by Malloch as belonging here belongs to Vittiger Kertesz. 



