458 N. E. MCINDOO. 



Plate I. 



Fig. I. Six of the eight olfactory pores (PorW) in group 6 on inner surface of 

 right hind leg of Epilachna borealis; also one hair (Hr), one hair socket (porWHr) 

 and two hypodermal gland pores (PorWGl). 



Fig. 2. Two olfactory pores (PorAp), five hairs (PorWHr) and 19 gland pores 

 (PorWGl) on outer surface at proximal end of right hind leg of Epilachna. 



Fig. 3. Five olfactory pores from tibial spine of Epicauta marginata (same as 

 shown in Text- fig. 2G). 



Fig. 4. Group i of olfactory pores on peduncle of elytron of Epilachna (same as 

 shown in Text-fig. iB). 



Fig. 5. Seven of the olfactory pores in group 2 on wing of Epilachna. 



Fig. 6. Eleven of the olfactory pores in group 3 on wing of Epilachna. 



Fig. 7. Ten of the olfactory pores in group 4 on wing of Epilachna. 



Fig. 8. Four of the five olfactory pores on ventral side of wing of Epilachna. 

 Figs. 5 to 8 represent some of the pores as shown in Text-Fig. iC. 



Fig. 9. Olfactory pore from trochanter of Uloma. 



Fig. 10. Olfactory pore from tibia of Uloma. 



Fig. II. Three olfactory pores from elytron of Uloma. 



Fig. 12. Olfactory pore and sense cell from wing of Uloma. 



Fig. 13. Olfactory pore and sense cell from trochanter of Orthosoma (cut slightly 

 obliquely). 



Fig. 14. Olfactory pore and about one third of sense cell (SC) from trochanter 

 of Orthosoma, showing pit (P) and flange (Fl). 



Fig. 15. Olfactory pore from tibia of Orthosoma. 



Fig. 16. Oblique section through trochanter of Epilachna, showing anatomy 

 of leg. It was cut in such a manner that no muscles are shown in the section and 

 that the nerve (N) is severed in two places. 



Fig. 17. Cross section through proximal end of tibia of Epilachna, showing 

 anatomy of leg at this place. The gland pore (PorGl), hair pore (PorHr) and sense 

 cells (SC), belonging to the tactile hairs (THr) were taken from two other sections, 

 and the gland cell just beneath the gland pore was taken from the other end of this 

 section. 



Fig. 18. Four olfactory pores and a small portion of hypodermis from elytron 

 of Epilachna. The material used for Figs. 17 and 18 was from an old adult beetle 

 that had been confined in the laboratory nearly all summer. 



Fig. 19. Four olfactory pores, sense cells and nerve (N) from wing of Epilachna. 



