78 OHIO STATE ACADEMY OF SCIENCE. 
EXPLANATION OF PLATES. 
Wherever in illustrating the Diaspinaec, a vertical line is 
drawn through a figure, the dorsal surface of the pygidium is 
shown on the left side and the ventral on the right. The figures 
are numbered consecutively, and no mention is made of the 
various plates in the descriptions. 
The majority of the plates were designed before Mrs. Fer- 
nald’s ‘‘ Catalogue of the Coecidae of the World’’ was published, 
hence some of the names inserted with the drawings are to be 
disregarded, and the following ones adopted : 
Plate i. (Original) 
Pygidium of Aspidiotus forbesi Johns. 
Part of same enlarged. 
Aspidiotus ostreaeformis Curt. 
Aspidiotus perniciosus Comst. 
Lo 
) 
= 
lee} 
oN ce | OE ed 
= 
gq geo oe do OQ 
Fi Aspidiotus ancylus Putn. 
G. Aspidiotus uvae Comst. 
Fig. 7. Aspidiotus juglans-regiae Comst. 
Fig. & Aspidiotus glanduliferus Ckll. 
Fig. 9 Aspidiotus comstocki Johns. 
Plate Il. (Original) 
Fig. 10. Aspidiotus hederae (Vall.) 
Fig. 11. Aspidiotus hederae (Vall.) 
Fig. 12. Aspidiotus cyanophylli Sign. 
Fig. 15. Chrysomphalus aonidum (Linn.) 
Fig. 14. Chrysomphalus obscurus (Comst.) 
Fig. 15. Chrysomphalus aurantii (Mask.) 
Fig. 16. Chrysomphalus aurantii (Mask.) 
Fig. 17. Chrysomphalus dictyospermi (Morg.) 
Plate IIIf. (Original) 
Fig. 18. Aspidiotus lataniae Sign. 
Fig. 19. Aspidiotus cydoniae crawii Ckll. 
Fig. 20. Aspidiotus rapax Comst. 
Fig. 21. Fiorinia fioriniae (Targ.) 
Fig. 22. Aspidiotus ulmi Johns. 
Fig. 23. Parlatoria zizyphus (Lucas). 
Fig. 24. Parlatoria pergandii Comst. 
Fig. 25. Comstockiella sabalis (Comst.) 
