77 



626. FLUTED SCALE. 

 Tcerytt pwrehasi. 



Principal enemy, Australian Lady-Bird. ( Vedalia cardinalis.) 

 Enlarged model of the adult of this insect, the introduction of which 

 from Australia has effected what was impossible by any other means, 

 the practical annihilation of the Fluted Scale in California. 



627. FLUTED SCALE. 



Icerya purchasi. 



Principal enemy, Australian Lady- Bird. ( Vedalia cardinalis.) 

 Enlarged model showing structure and characteristic appearance of 

 the larva. (See 626.) 



628. FLUTED SCALE. 



Icerya purchasi. 



Principal enemy, Australian Lady-Bird. ( Vedalia cardinalis.) 

 Enlarged model showing structure and characteristic appearance of 

 the pupa. (See 626.) 



629. FLUTED SCALE. 



Icerya purchasi. 



Illustrations showing the manner in which the Australian Lady-Bird 

 attacks and destroys the Fluted Scale, adult insect A ; greatly enlarged 

 Bj natural size C. 



630. OYSTER-SHELL BARK-LOUSE. 



Mytilaspis pomorum. 

 Gravid female scale. 



Model in wax, greatly enlarged, of the female scale, illustrating its 

 characteristic oyster-shell shape and general structure, as viewed from 

 above. (See No. 7.) 



631. OYSTER-SHELL BARK-LOUSE. 



My t i lasp is porno r u m. 

 Gravid female scale. 

 Model in wax of the female scale, greatly enlarged, ventral view, 

 show ing disposition of the eggs beneath the scales. 



632. OYSTER SHELL BARK LOUSE. 

 Mytilaspis pomorum. 



Greatly cnlarged«wax model of new ly' -hatched larva. 



633. OYSTER-SHELL BARK LOUSE. 

 Mytilaspis potnonttH. 

 Model in wax of male, enlarged to same proportion as the female 

 scale, showing the striking gnat-like appearance of the male of this and 

 other scale insects. 



