Journ. Nat. Ilisr. and Set. Soc., W.A. Voi.. V. I’i.atr XVI. 
Fig. i. — -Early Stage of Infestation. 
The invading larvae have entered the eyes of the tuber. The jet black 
masses are composed of the excrement of the infesting larvce. 
Fig. 2. — Advanced Stage of Infestation. 
The infested tuber has mummified ; the objects in the cavities are the 
pupae of the moth. 
