16 



BLACK SCALE. (Figure No. 8.) 



Lecanium Olea (Bernard). 



Figure No. 8. 



Description. — Dark brown, nearly black, in color; almo.st heniispberical in form, often 

 however, a little longer than broad ; average length, from 4 mm. to 5 mm. ; average height 

 3 mm.; dorsum, the latter dividing the body into three subequal portions (frequently the 

 longitudinal ridge is more prominent between the transverse ridges than elsewnere, there 

 forming with them a raised surface of the shape of a capital H). The bodj^ is slightly 

 margined, the outer jiart of the disc, with many, having eighteen to twenty small ridges, 

 which extend from the margin half way up the center of the dorsum. The antennro are 

 long and eight-jointed, the two basal joints short, joint three longest, joints four and five 

 equal and shorter, joints six and seven equal and still shorter, joint eight with a notched 

 margin and almost as long as joint three; legs, rather long and stout, the tibia being about 

 one fifth longer than the tarsi; egg, long and oval in shape, .04 mm. in length, yellowish in 

 color. 



Newly-Hatched Larvx. — There is nothing very characteristic about these. They are flat 

 and their antennae six-jointed. 



