ERIOPTERINI. 439 



7. Venation abnormal, onl}' one sub- 



marginal cell,* the veins in tlie 

 anterior part of the wing distorted 



somewhat from their usual positions . Styringomyia, Lw.,p.459. 

 Venation normal (except Lechrid) ; the 

 veins in the anterior part of the wing 

 bearing their usual relations to one 

 another 8. 



8. Marginal cross-vein absent 9. 



Marginal cross-vein present 10. 



9. The 1st longitudinal vein turned down 



into the 2nd, meeting it where it forks ; 

 discal cell in the middle of the wing, 

 the anterior cross-vein in the middle 



of the discal cell Lechria, Skuse, p. 465. 



The 1st longitudinal vein ending as 

 usual in the costa, clear of the 2ud ; 

 discal cell wholly beyond the middle 

 of the wing, the anterior cross-vein at 

 its upper basal corner Gonomyia, Mg., p. 468. 



10. Anterior cross-vein absent 11. 



Anterior cross-vein present Empeda, Os. Sac, p. 475. 



11. Discal cell present 12. 



Discal cell absent. Three posterior [p. 481. 



cells ; anal cell closed Mongomioides, Brun., 



12. Four posterior cells, anal cell closed . . Mongoma, Westw., p. 476. 

 Three posterior cells, anal cell open . . Paramongojia, Brim., 



13. The 7th longitudinal vein straight . . 14. [p. 484. 

 The 7tli longitudinal vein con- 

 spicuously bisinuate Symplecta, ]Mg., p. 485. 



14. Body slender; legs slender, minutely 



pubescent in normal manner'; 



abdomen not narrowed at base .... Gnophomy'ia, Os. Sac, 

 Body compact, robust (rather re- [p. 487. 



sembling Teucholabis) ; legs con- 

 spicuously though shortly hair}^ ; 

 abdomen narrowed at base Dasymallomyia, Brun., 



15. Anterior cross-vein placed at the [p. 494. 



beginning of, or over the middle of, 

 the discal cell ; in the absence of 

 the discal cell, at the base of the 3rd 



posterior cell 16. 



Anterior cross-vein distinctly bej'ond 

 the distal cell \ . . ~ Conosia, Wulp, p. 496. 



16. Subcostal cross-vein near tip of 



auxiliary vein. Discal cell present, 

 proximal end rectangular ; antennal 

 scape long, normal ; fiagellum of 14 



oval joints . . . . , Cladfra, Os. Sac, p. 409. 



Subcostal cross-vein very far before tip 

 of auxiliary vein, near middle of 

 wins 17. 



* In spite of Styringomyia having only one submarginal cell, its natural 

 affinity is here, with strong resemblances to Erioptera, Gonomyia and the 

 curious Australian genus LccJiHa, Skuse. 



