Aspidiotus. 59 



Habitat in Ceylon on Agave mnericana (American aloe), and on Citrus 

 decumana (pomelo), on under surface of leaves. I have not as yet noticed it on 

 orange trees in Ceylon. Reported to be very destructive in orange plantations 

 in America, where it is known as the Red Scale. In New Zealand and Australia 

 it is abundant on orange and lemon trees, and occurs on the fruit as well as on 

 the leaves. Mr. Maskell states that several hundreds of the scales may often 

 be seen on a single fruit in the market. The species occurs at present only 

 sparingly and locally in Ceylon ; but, should orange cultivation be attempted 

 on a large scale it would be advisable to be on guard against the increase of 

 this insect. 



EXPLANATION OF PLATE XII. 



Aspidiotus aurantii. 

 {All figures, except No. i, more or less enlarged.) 



Fig. I. Piece of aloe leaf, with insects in situ, nat. size. 



2. Female puparium, from above. 



3. Male puparium. 



4. Female puparium, from below, with insect in situ. 



5. Adult female, dorsal view. 



6. Adult male, dorsal view. 



7. Head of male, from below. 



8. Foot of male (third pair). 



9. „ „ (first pair). 



10. Terminal joint of antenna of male. 



11. Pygidium of adult female. 



12. A single squame from margin of pygidium. 



