THE CANADIAN ENTOMOLOGIST. 113- 



* — Proboscis not elongated. 



t — Costal vein extending beyond the tip of the cubitus. 



J — Basal part of the cubital vein and middle transverse vein 



equally long. 



§ — Auxiliary vein not extending to the costal vein i Syntemma 



§§ — Auxiliary vein extending to the costal vein 3 Anactinia 



J J — Basal part of the cubital vein longer than the middle 



transverse vein. 

 § — Base of the 4th hind areolet under the base of the cubital 



vein 2 Leptomorphus 



§§ — Base of the 4th hind areolet nearer to the base of the 



wing than is the base of the 2nd hind areolet 4 Boletina 



§§§ — Base of the 4th hind areolet more distant from the base 



of the wing than is the base of the 2nd hind areolet. . 6 Phthiria 

 ft — Costal vein not extending beyond the tip of the 



cubitus 7 Glaphyroptera 



** — Proboscis elongated 5 Gnoriste- 



b — Abdomen with six segments. 

 ^ — Hind vein forked. 



t — Fork long 8 Leja 



ft — Fork short 9 Coelosia 



** — Hind vein not forked. 



t — Middle discoidal vein forked 10 Aenemia 



ft — Middle discoidal vein not forked 11 Azana 



B — Three ocelli : one on the inner border of each eye ; the 



third in the middle of the fore front, 

 a — Costal vein extending much beyond the tip of the cubital 



vein. 

 c — Two ocelli ; one on the inner border of each eye. 

 a — Base of the 4th hind areolet nearly in a transverse line 



with that of the second hind areolet 25 Mycetophila 



b — Base of the 4th hind areolet much more distant from the 



base of the wing than is the base of the 2nd hind 



areolet 26 Dynatosoma 



c — Base of the 4th hind areolet much nearer to the base of 



the wing than is the base of the 2nd hind areolet 27 Cordyla 



t — Petiole of the second hind areolet long 20 Exechia 



t+ — Petiole of the 2nd hind areolet short 24 Mycothera 



**** — No 4th hind areolet. 



