154 Chionaspis. 



glands. Although I think that the general characters of the insect are such as 

 would warrant its separation from Chionaspis — should other closely allied forms 

 be discovered — I have for the present retained it in its original genus. 



EXPLANATION OF PLATE LIV. 



Chionaspis biclavis. 



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



Fig. I. Piece of cinchona stem, with insects in situ, nat. size. 



2. Piece of bark from tea stem, enlarged, showing two scales. 



3. Female puparium, from above. 

 4- „ „ from below. 



5. Early adult female, dorsal view. 



6. Later stage „ „ „ 



7. Adult female, fully developed, dorsal view. 



8. „ „ „ „ ventral „ 

 9- >i ,1 pygidium, dorsal view. 



10. „ „ antenna. 



11. Abdominal extremity of young larva. 



