ILLUSTRATIONS. 



PLATES. 



Page. 

 Plate I. Fig. 1. — Leaf showing pupa cases of the citrus white fiy (Aley- 



rodes citri); also a few pupae and eggs. Fig. 2. — Underside of 

 orange leaf showing heavy infestation by citrus white fly. 

 Fig. 3. — Leaf showing pupa cases of the cloudy- winged white 

 fly (Aleyrodes nubifera), an insect prevalent on citrus plants in 



Florida and very closely related to Aleyrodes citri 10 



IL Fig. 1. — Tender growth of citrus swarming with adults of the cit- 

 rus white fly. Fig. 2. — Leaf of same enlarged 10 



III. Fig. 1. — Orange covered with sooty mold (Meliola sp.). Fig. 2. — 



Leaf of orange coat«d with sooty mold 12 



IV. Orange production in India and Java. Fig. 1. — A native house 



in eastern India with orange trees in the yard. Fig. 2. — How 



oranges are grown in Java 20 



V. Scenes in the botanical gardens of India 20 



VI. Traveling in India. Fig. 1. — Country boat, utilized for travel- 

 ing in Assam. Fig. 2. — Traveling by horseback in the outer 



Himalayas 22 



VII. The leaf -miner Phyllocnistis citrella in India. Fig. 1. — Young 

 citrus trees showing leaves of top shoots deformed by attacks 

 of a leaf -miner {Phyllocnistis citrella). Fig. 2. — Cloth cages 

 placed over young citrus to protect them from the ravages of 



this leaf-miner 28 



VIII. An orange hedge in the Botanical Garden at Lahore, India. Figs. 

 1, 2, 3. — Method of protecting citrus from penetrating rays of 

 sun by utilizing cloth coverings 32 



IX. Transshipping the natural enemies of the citrus white fly. Fig. 

 1.^ — The six Wardian cases containing the natural enemies of 

 the citrus white fly as they arrived at the laboratory at Orlando, 



Fla. Fig. 2. — A Wardian case with the top removed 36 



X. Fig. 1. — The six Wardian cases containing natural enemies of the 

 citrus white fly leaving Lahore at the beginning of theii' long 

 journey to the United States. Figs. 2 and 3. — Native Hindu- 

 stani who rendered assistance to the writer in collecting the 

 natural enemies of the citrus white fly 36 



XI. Orange production in India. Fig. 1. — Orange production in the 



Khasia Hills of Assam. Fig. 2. — A native orange grower 48 



XII . Transporting oranges to market in the outer Himalayas. Fig. 1. — 

 Natives in the Province of Sikkim canying oranges in baskets 

 to the bazaar. Fig. 2. — An orange bazaar in the outer Hima- 

 layas 48 



TEXT FIGURES. 



Fig. 1. Map showing present known world distribution of the citrus white fly 



{Aleyrodes citri) 16 



2. Map showing localities in which the citrus white fly was found in India. 23 

 62800°— Bull. 120—13 2 7 



