PLATE XVIII. 

 Fig. 



1. Dactylopius poa. a, Insects on roots of Poa (tussock-grass) ; 6, adult 



female ; c, antenna of adult female ; d, foot of adult female ; e, anogeni- 

 tal ring and anal tubercles of adult female. 



2. Pseudococcus astelia. a, Insects on leaf of Astelia ; 6, adult female, dorsal 



aspect ; c, antenna of adult female ; d, foot of adult female ; e, various 

 spinnerets. 



