EXPLANATION OF PLATE XXXI. 



Fig. i 

 Fig. 2 

 Fig. 3 

 Fig. 4 

 Fig. 5 

 Fig. 6 

 Fig. 7 

 Fig. 8 

 Fig. q 



■Sesia saxifrages (Hy. Edw.), Female. 



. — Sesia mellinipennis Boisd., Male. 



. — Sesia bassiformis (Walker), Male. 



. — Sesia texana (Hy. Edw.), Male. 



. — Sesia decipiens (Hy. Edw.), Female. 

 ■Sesia prosopis (Hy. Edw.), Male. 

 ■Sesia tecta (Hy. Edw.), Male. 

 ■Sesia gilice (Hy. Edw.), Male. 



. — Sesia rileyana (Hy. Edw.), Male. 

 Fig. io. — Sesia pictipes (G. & R.), Female. 

 Fig. ii. — Sesia rubristigma (Kellicott), Male. 

 Fig. 12. — Sesia candescens (Hy. Edw.), Female. 

 Fig. 13. — Sesia decipiens (Hy. Edw.), Male. 

 Fig. 14. — Sesia novaroensis (Hy. Edw.), Female. 

 Fig. 15. — Sesia querci (Hy. Edw.), Male. 

 Fig. 16. — Sesia pyri (Harr.), Female. 

 Fig. 17. — Sesia corni (Hy. Edw.), Female. 

 Fig. 18. — Sesia morula (Hy. Edw.), Female. 

 Fig. 19. — Sesia tipuliformis (Clerck), Female. 

 Fig. 20. — Sesia sigmoidea Beuten., Female. 

 Fig. 21. — Sesia corusca (Hy. Edw.), Female. 

 Fig. 22. — Sesia ithacce Beuten., Female. 

 Fig. 23. — Sesia albicornis (Hy. Edw.), Female. 

 Fig. 24. — Sesia acerni (Clemens), Female. 

 Fig. 25. — Sesia scitula (Harr.), Female. 

 Fig. 26. — Sesia mellinipennis Boisd., Female. 

 Fig. 27. — Sesia mellinipennis Boisd., Female. 

 Fig. 28. — Sesia fulvipes (Harr.), Male. 

 Fig. 29. — Sesia animosa (Hy. Edw.), Male. 

 Fig. 30. — Sesia animosa (Hy. Edw.), Female. 

 Fig. 31. — Gaea emphytiformis (Walk.), Female. 

 Fig. 32. — Euhagena nebraskce Hy. Edw., Male. 

 Fig. 33. — Memythrus admirandus (Hy. Edw.), Male. 



