STATE POMOLOGICAL SOCIETY. I37 



the oyster-shell l)ark-louse. The young find a suitable place on 

 the stem, leaves and fruit of the host plant and attach themselves 

 by their sucking beaks, living on the sap. Sooner or later a 

 scale develops over them. The female lay eggs or produces 

 young and the body shrivels finally occupying only a small space 

 at one end or the centre of the scale. 



SCALE INSECTS OF MAINE. 



We have made no special study of the scale insects of Maine. 

 They are quite numerous attacking both wild and cultivated 

 plants. We know quite a num1)er of species but will only con- 

 sider the more common ones that have been found doing injury 

 to cultivated plants in the State. 



THE WHITE SCALE OLEANDER SCALE. 



Aspidiotus ncrii Boiichc. We have received specimens of 

 English Ivy infected with the white scale. It does not seem to 

 be common in Maine. It may have been introduced with the 

 plants when they came from the dealers. We know of one case 

 where a healthy plant was infested from a neighbor's plant by 

 leaves brought into the house. This scale is founH on oranges 

 and lemons and might be introduced by those fruits brought into 

 the house. This species is figured and described in Maine Experi- 

 ment Station Report for 1888 p. 184. We have no specimens 

 to show you. 



THE PINE-LEAF SCALE. 



Chionaspis pinifoliae Fitch. This species is snow white and 

 though small is easily seen upon the green leaves. 



It is quite abundant on three species of pine on the university 

 campus and also on Norway spruce. 



The specimen branches submitted show the scale nicely. 



THE OYSTER-SHELL BARK-LOUSE. 



Alytilaspis pomonun Bonchc. Is the most common injurious 

 species found in Maine. It is widely distributed in the State 

 and must do considerable damage to orchards. We have found 

 it on the apple, pear, plum, round-wood, wild and cultivated 

 currants and abundantly on willow It is introduced on voung 



