HYDRIOMENIDAE 



179 



TABULATION OF GENERA. 



1. 



15. 



3. Hindwings in 



2. 



Posterior wall of areole absent . 

 wall of areole present . 

 2. Posterior tibiae without middle-spurs 

 with all spurs present 

 with dorsal lobe 

 without lobe . 



4. Areole simple . . . 



double . . . 



5. Forewings with 1 1 running into 12 



with 11 free from 12 . 



6. Hindwings in $ with dorsal lobe 



without lobe . . 



7. Antennae in $ pectinated . . 



simple . . . 



8. Thorax hairy beneath ; palpi long-haired . 



glabrous ; palpi rough-scaled . 



9. Face forming an obtuse prominence 23 



not prominent . . . 



10. Antennae in < ciliated with long fascicles 18. OPEROPHTERA. 



shortly and evenly ciliated . 11. 



11. Face flat, smooth . . .19. EUCHOECA 



rounded, with somewhat projecting scales . 12. 



12. Abdomen with small segmental crests 6. TEPHROCLYSTIS. 



not crested . . .14. PLEMYRIA. 



CATACLYSME. 

 . .2. 



. . 3. 



. . 4. 



1. TRICHOPTERYX. 

 5. GYMNOSCELIS. 

 . .5. 



. .13. 



4. CHLOROCLYSTIS. 

 . .6. 



MYSTICOPTERA. 

 .7. 

 .8. 

 .10. 

 24. LYTHRIA. 



. 9. 



RHODOMETRA. 

 21. VENUSIA. 



13. Antennae in 



pectinated . 22. XANTHORHOE. 



,, not pectinated . . .14. 



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



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. EUCESTIA. 



not hooked . .10. CARSIA. 



with subcostal hair-pencil 8. COLLIX. 

 without subcostal hair-pencil . 19. 

 with deep dorsal furrow 11. CALOCALPE. 

 without dorsal furrow . . 20. 



with hair-pencil along Ib beneath 



13. EUSTROMA. 

 without hair-pencil on Ib . 21. 



18. Hindwings in 







19. Hindwings in 



,, 



20. Forewings in 



