'S2G EMPIDA'. 



Table of Genera. 



1. Second longitudinal vein beginning nearei- 



Imnieral cross-vein than anterior cross- 

 vein 2. 



Second longitudinal vein beginnino- nearer 

 anterior cross-vein than humeral cross- 

 vein 4. 



2. Anal cell ending' mncli before margin of wing 3. [p. 334. 

 Anal cell extending to margin of wing .... Harpamerus, Big., 



3. Hind femora iucrassate, spined below .... vSynechf.s, Walk., 



[p. 327. 

 Hind femora not incrassate nor spined below Acarterus, Lw., 



4. Basal portion of 4th vein (dividing basal Tp. 334. 



cells) indistinct Syndyas, Lw., p. 333. 



Basal portion of 4th vein (dividing basal 

 cells) distinct 5. 



5. Hind femora incrassate ; thorax very humped ; 



arista apical Hycos, Mg., p. 336. 



Hind femora not incrassate ; thorax less [p. 343. 



humped ; arista subapical Parahybos, Kert., 



These characters are mainly comparative, especiaDy as regards 

 the origin of the 2nd longitudinal vein. The degree of incrassa- 

 tion of the hind femora and the size of the spines on its underside 

 are both variable characters. The sole characteristic of Syndyas 

 seems a very weak one, whilst that distinguishing Harjxtmerus 

 appears very strong, yet the latter is sunk in Syneclies in Kertesz's 

 Catalogue. Both these latter genera are unknown to me. It is- 

 difficult to draw definite generic limits in Htbotin.e without aa 

 exhaustive examination of all the known species. 



Tahle of Species of Syneclies (sensu lato), 

 Syndyas, and Harpamerus. 



1. Anal cell extending to wing-margin .... sic/nntus, Big., p. 334. 

 Anal cell ending much before wing- 

 margin 2. Tp. 328. 



2. Thorax bright brownish yellow immaculatus, Brun., 



Thorax black, blackish brown, or dark 



brown 3. 



3. Wing with several dark brown marks, 



apart from stigma bif/oti, Bezzi, p. 329. 



"Wing unmarked, apart from stigma ; 



ground-colour from clear to brownisli 4. [p. 333.. 



4. Discal cell unusually small ;;ori'/cf//(i/«^<, Bez'zi, 



Discal cell at least more than twice as 



long as broad 5. 



5. Legs, at least femora (except extreme 



base or tip), all yellow G. 



Legs mainly black or dark brown, at least 

 all femora practically so (except hind 



femora in yusticua) 7. 



G. Thorax less arched ; legs with soft pubes- 

 cence in addition to tibial bristles ; 

 anal cell considerably longer than 2nd 

 basal, with siibconical tip intrqualis, Brun., p. 330.. 



