HYDRIOMENIDAE 



Tabulation of Genera. 



1. Posterior wall of areole absent . 15. Cataclysme. 



„ wall of areole present . . .2. 



2. Posterior tibiae without middle-spurs . . 3. 



„ „ with all spurs present . . 4. 



3. Hindwings in $ with dorsal lobe 1. Trichopteryx. 



„ „ without lobe . 5. Uymnoscelis. 



4. Areole simple . . . . .5. 



„ double . . . . .13. 



5. Forewings with 11 running into 12 4. Chloroclyktis. 



,, with 11 free from 12 . . .6. 



6. Hindwings in $ with dorsal lobe 2. Mysticoptera. 



„ „ without lobe . . .7. 



7. Antennae in $ pectinated . . .8. 



,, ,, simple .... 10. 



8. Thorax hairy beneath ; palpi long-haired . 24. Lythria. 



„ glabrous ; palpi rough-scaled . . 9. 



9. Face forming an obtuse prominence 23. Rhodometra. 



„ not prominent . . .21. Venusia. 



10. Antennae in c? ciliated with long fascicles 18. Operophteiia. 



„ ,, shortly and evenly ciliated . 11. 



1 1 . Face flat, smooth . . .19. Euchoeca 



„ rounded, with somewhat projecting scales . 12. 



12. Abdbmen with small segmental crests 6. Tepiiroclysi is. 



,, not crested . . .14. Plemyria. 



13. Antennae in $ pectinated . 22. Xanthoriioe. 



„ „ not pectinated . . .14. 



14. Hindwings in $ with dorsal lobe . 3. Loropiiora. 



„ ,, without lobe . . .15. 



15. Thorax with horny anterior prominence . 17. Pelurga. 



„ without horny prominence . .16. 



16. Hindwings in $ with basal dorsal ridge and pocket 17. 



„ ,, without basal ridge and pocket 18. 



17. Anterior tibiae hooked . . .9. Euokstia. 



,, ,, not hooked . . 10. Carsta. 



18. Hindwings in $ with subcostal hair-pencil 8. Collix. 



„ „ without subcostal hair-pencil . 19. 



19. Hindwings in 3 with deep dorsal furrow 11. Calocalpe. 



„ „ without dorsal furrow . . 20. 



20. ForQwings in (J with hair-pencil along lb beneath 



13. Eustroma. 

 „ „ without hair-pencil on lb . 21. 



