SCALE INSECTS OF IMPORTANCE 361 



EXPLANATION OF PLATES 



Plates 1-7 were executed from nature, under the author's direction, by L. H. Joutel of New 

 York. 



PLATE I 



Appletree bark louse 



Myiilaspis pomorufn Bouche 



FIG. 



1 Eggs and two empty, shriveled shells, very much enlarged 



2 Active young, very much enlarged 



3 Young just after they have settled on the bark, very much enlarged 



4 Partly grown scales with an old one, much enlarged 



5 Partly grown young still more enlarged 



6 Male scale, much enlarged 



7 Female scale, much enlarged 



3 Female scale reversed, showing shriveled parent and eggs, much 



enlarged 

 9 Female scales on poplar bark, natural size 

 10 Female, very much enlarged 



PLATE 2 

 Scurfy bark louse 



Chionaspis furfiira Fitch 



IG. 



1 Female scale broken open to reveal the purplish eggs within, very 



much enlarged 



2 Active young, very much enlarged 



3 Partly grown scales, much enlarged 



4 Adult female and two male scales, much enlarged 



5 Female scale reversed, showing egg and shrunken body of mother, 



very much enlarged 



6 Male scale, very much enlarged 



7 Scales on twig, natural size 



3 Male scales on bark, much enlarged 



9 Adult female just before oviposition, much enlarged 



FIG, 



