EXPLANATION OF PLATE XVIII. 



DIASPIS BROMELI^;. (Page 156.) 

 Fig. 1. Margin of pygidium of adult female. X 600. 



DIASPIS BOISDUVALII. (Page 153.) 



Fig. 2. Margin of pygidium of adult female, x 600. 

 8. Antenna of larva, x 600. 



DIASPIS CALYPTROIDES. (Page 151>.) 

 Fig. 3. Margin of pygidium of adult female. X 600. 



DIASPIS ZAMLE. (Page 165.) 

 Fig. 4. Margin of pygidium of adult female, x 600. 



AULACASPIS ROSJC. (Page 168.) 



Fig. 5. Margin of pygidium of adult female, x 600. 

 7. Antenna of larva, x 600. 



POLIASPIS CYCADIS. (Page 177.) 

 Fig. 6. Margin of pygidium of adult female, x 600. 



