62 PROCEEDINGS ENTOMOLOGICAL SOCIETY 



also found in Japan. In France it is known as the orange Psylla 

 on account of injuries to oranges. P. cistellata Buckton causes 

 galls on mango in Dehra Dun. Trioza obsoleta Buck, attacks the 

 persimmon in Thana and a species of this genus injures the young 

 growth of citrus trees in South Africa, where it is known as the 

 citrus Psylla. Mycopsylla fid is found on native figs in Australia, 

 the larva? hiding under the abundant milky sap which exudes from 

 the punctures made. Homotoma ficus L. attacks the foliage of 

 fig in Italy, the species being present also in Spain, France, Dal- 

 matia, etc. The olive Psyllid, Eupkyllura otivina O. Costa injures 

 the olive and has about the same range as the preceding species. 



Aleyrodidce. 



The Aleyrodidse is a family of wide distribution in the temperate 

 and tropical parts of the world. Many species have already at- 

 tracted attention by their injuries and a few constitute quite 

 destructive pests. Aleyrodes citri and A. vaporariorum may be 

 cited as examples of very undesirable introductions already effected. 



Two species injure tobacco, namely, Aleyrodes tabaci Gennadius, 

 in Greece, and A. nicotiance Maskell in Mexico. Sugar cane in 

 Java is attacked by three species, namely, Aleyrodes bergii Signoret, 

 A. longicornis Zehntner, and A. lactea Zehntner. The guava in 

 Brazil is infested with Aleyrodes horridus Hempel and A. goyabce 

 Goldi. Aleurodicus cocois Curtis is a guava pest of importance in 

 Trinidad, Venezuela and Brazil, and has long been known as 

 troublesome to cocoanut palms in portions of the West Indies. 

 A closely related species, A. destructor, seriously infests this plant 

 in the Philippines. 



In Europe, Aleyrodes brassicce Walker has long been known as 

 more or less destructive to cabbage, kale and other members of the 

 cruciferous family. Aleyrodes youngi Hempel seriously infests 

 cabbage in Brazil. Aleyrodes ribium Douglas occurs on red and 

 black currants in England. Many other species might be men- 

 tioned as of possible or actual economic importance in foreign 

 countries. 



Coccidce. 



The Coccidse, as a family, is of the greatest economic importance. 

 The mode of life of the species favor their wide dissemination, and 

 very many are now practically cosmopolitans. In this family 

 especially it is difficult to surmise the behavior of a species intro- 

 duced in a new environment, with abundance of food, etc. Mr. 

 Sasscer has kindly assisted me in the selection of a few forms, not 

 yet found in North America, and which are evidently of importance 

 in their present range of distribution. 



