Chionaspis. 139 



covering. But, though such an inconspicuous species, it seems to be almost 

 more extensively parasitised than any other. Fully ninety per cent, of the 

 specimens examined contained pupce of hymenopterous parasites. Such speci- 

 mens assume an elongate form {fig. 2), all the segments well defined, the 

 parasite occupying the thoracic region. The parasite has been named by Dr. 

 L. O. Howard Physciis varicornis. 



EXPLANATION OF PLATE XLVL 



Chionaspis el^e.-^gni. 



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



Fig. I. Leaf of Elccagni/s, with insects in sifii, nat. size. 



2. Adult female, containing pupa of parasite. 



3. „ „ after oviposition, dorsal view. 



4. Female puparium. 



5. Male „ 



6. Adult female, before oviposition, ventral view. 



7. „ „ pygidium. 



8. Adult male, dorsal view. 



9. „ „ terminal joint of antenna. 



10. „ „ foot. 



11. Rudimentary antenna of female. 



