Explanation of Plate VII 



Pimento Trees in Jamaica attacked by Scale in- 

 sects {Aspidiotus pimentae, Newst., sp. n.). 



Fig. 1. Scale attacked by the fmigus Myriatigium 

 duriaei, Mont. & Berk. 



2. Abnormal shedding of bark by an at- 



tacked tree. The trouble gradually 

 gets worse, until the tree becomes 

 bark-bomid. The scales remain on 

 raised islands of live uncast bark 

 tissue. 



3. Tree dying from attacks by scales. 



