130 



N. E. McINDOO 



The compound organs are found only on the distal halves of the 

 last antennal segments. 



Since the pore apertures in the compound and single organs 

 are practically the same in size, it m.ay be assumed that a sense 

 cell belonging to a compound organ functions equally as well aS 

 one belonging to a single organ; and since an adult beetle and 

 its larva have practically the same number of pore apertures, it 

 may further be assumed that the larva smells equally as well as the 

 adult form, and we know that adult beetles smell well. 



TABLE 1 

 Disposition of olfactory pores observed on three larvce of Allorhina 

 {Cotinis) nitida 



