ILLUSTRATIONS 



PLATES. 



Page. 

 Plate I. Fig. 1. — Young oranges showing injury by the orange thrips (Euthrips 

 citri). Fig. 2. — Young oranges showing injury to stem and blos- 

 som ends by the orange thrips 4 



II. Mature oranges showing injury due to the orange thrips 4 



III. Orange foliage showing curled and distorted condition of leaves due 



to work of the orange thrips 4 



TEXT FIGURES. 



Fig. 1. — Diagram illustrating the relative abundance of orange thrips on oranges, 



on orange foliage, and on other plants during the season 7 



2. — Power spraying outfit in use in spraying for the orange thrips 14 



IV 



