EXPLANATION OF PLATE XXV. 



MYTILASPIS POMORUM. (Page 194.) 



Fig. 1. Adult female after treatment with potash 



(ventral), x 50. 



2, 3. Rudimentary antennae of adult female, x 

 500. 



4. Male antenna, x 100. 



5. Terminal joint of male antenna, x 600. 



6. Leg of male, x 100. 



7. Tarsus and claw of male, x 600. 



8. Halter of male, x 600. 



9. Spiracle of male, x 600. 



MYTILAMIS IMNN^FORMIJS. (Page 201.) 



Fig. 10. Adult female after treatment with pot;isli. 

 x 50. 



11. Cast skin of second-stage female, x 50. 



12. Cast skin of larva, x 100. 



PINNASPIS BUXI. (Page 207.) 



Fig. 13. Antenna of adult female. X 500. 



14. Spiracles and parastigmatic glands of adult 

 female. X 500. 



