122 [November, 



13 (8) Proboscis longer than the head and thorax together Qeranomyia. 



14 (7) Antennae 16-jointed. 



15 (22) Snbcostal vein ends in tlie costal ; tibiae without spurs at the tip .. 



IlhamphidiincB. 



Ifi (17) Proboscis at least twice as long as the head Rhamphidia. 



17 (16) Proboscis shorter than the liead. 



18 (19) Discal cell closed Antocka. 



19 (18) Discal cell open. 



20 (21) Discal cell coalescent with second posterior cell Orimarga. 



21 (20) Discal cell coalescent with third posterior cell Thaiimastoptera. 



22 (15) Subcostal vein usually incurved towards the radial, and ending in it ; tibioe 



always with spurs at the tips Cylindrotomince . 



23 (24) Upper vein from discal cell forked Cylindrotoma. 



24 (23) Upper vein from discal cell not forked Liogma. 



25 (6) Two submarginal cells (empodia distinct). 



26 (43) Tibiae without spurs at the tip UriopterirKe. 



27 (34) Wings conspicuously hairy, at any rate along the veins. 



28 (29) Wings conspicuously hairy on the whole surface RhyphoJophus. 



29 (28) Wings conspicuously hairy on the veins only. 



30 (31) The prsefuroa ends in the first submarginal cell, which is longer tlian the 



second ; the great cross vein much nearer the base of the wing than 

 the small one is MolopMlus. 



31 (30) The prsefurca ends in the second submarginal cell, which is longer than 



the first ; the great and small cross veins are nearly in a line. 



32 (33) The axillary vein is arcuated so much that the anal cell is broader in its 



middle than near its margin Erioptera. 



33 (32) The axillary vein is straight, diverging from the anal, so that the anal cell 



is much broader at its end than in its middle Acyphona. 



34 (27) Wings not conspicuously hairy on the surface, and very slightly on the veins. 



35 (38) First submarginal cell remarkably short, not more than half as long as 



second. 



36 (37) Marginal cross vein present Empeda. 



37 (36) Marginal cross vein absent Ooniomyia. 



38 (35) First submarginal cell much more than half the length of the second. 



39 (42) The subcostal cross vein a long way from the tip of the mediastinal (more 



than twice the length of the great cross vein). 



40 (41) Axillary vein conspicuously bisinuated Symplecta. 



41 (40) Axillary vein straight Trimicra. 



42 (39) The subcostal cross vein is close to the tip of the mediastinal... 



Lipsothrix. 



43 (26) Tibiso with spurs at the tip (even though minute). 



44 (61) Subcostal cross vein after the origin of the prrefurca. 



45 (58) Antennae 16-jointed LimnophilincE. 



46 (57) Axillary vein nearly straight (not short). 



