EXPLANATION OF PLATE XXI. 

 CHIONASPIS BICLAVIS. (Page 190.) 



Fig. 1. *Insects, natural size, in situ on branch of tea- 

 plant. 



2. *Portion of branch magnified three diameters, 



showing parasitised, semi-detached, and per- 

 fect puparia marked ? . 



3. fPuparium of adult female (detached) covered 



with epidermal layer of bark. X 15. 



4. tPuparium of adult female with the bark re- 



moved (dorsal). X 15. 



5. tPuparium of adult female (ventral). X 15. 



6. t Adult female after treatment with potash. 



x 45. 



7. tRudimentary antenna of adult female. X 600. 



8. tTubular spinneret of adult female. X 000. 



CHIONASPIS ASPIDISTRA. (Page 187.) 



Fig. 9. Adult female, parasitised, showing hymenop- 



terous parasite within, x 45. 

 10. Adult female (normal). X 45. 



(Both examples after treatment with potash.) 



CHIONASPIS SALICIS. (Page 180.) 



Fig. 11. Adult female after treatment with potash. 

 x 45. 



12. Antenna of adult female. X 500. 



13. Tubular spinneret of adult female. X 600. 



* From Cingalese specimens, ex coll. Green, 

 f From British specimens, ex coll. Douglas. 



