179 



liavc been tested Avith excellent results in increased production. 

 Further improvements in the apparatus for applying arsenate of lead 

 against hornworms (Protoparce) has resulted in a more thorough 

 application at a material reduction of cost. The storage of 

 manufactured tobacco at a low temperature ensures an efficient and 

 economical means of preventing loss by the cigarette beetle {Losioderma 

 serricorne). The eggs of the beetles may be sterilised by exposure to 

 Rontgen rays [see this Revieio, Ser. A, v, p. 3]. Experiments in the 

 control of sugar-cane insects and the Argentine ant (Iridomyrmex 

 knmilis) have been continued. 



The section of this report on cereal and forage crop insects reviews 

 the work done in connection with the alfalfa weevil {Hypera 

 variabilis), grasshoppers, the green bug, the Hessian fly (Mai/etiola 

 destructor), the chinch bug {Blissus leucopfera), white grubs {Lach- 

 nosterna), the fall army worm [Laphygma frugiperda) and the true 

 army worm {Cirphis imipuncta), wireworms, and the alfalfa-seed 

 Chalcid {Bruchophagvs funehris). 



Of the insects affecting forest trees, the western pine beetle 

 {Dendroctonus hrevicornis) is reported as the most destructive, and 

 of those affecting shade trees and hardy plants the hickory bark 

 beetle {Scolylus quadrispinosus) caused the death of many hickories. 

 Defoliation caused by cankerworm and the forest tent caterpillar 

 {Malacosoma disstria), and subsequent attack by the two-hned 

 chestnut borer {Agrilus bilineatus), led to the death of many oaks. 

 A flat-headed borer is reported to have done extensive damage to 

 the so-called Australian pine in Florida. This insect normally breeds 

 in the red mangrove. Much damage by termites to the woodwork of 

 buildings was reported and many documents in the U.S. Bureau of 

 Engraving and Printing were thus destroyed. It has been found 

 that the addition of 1 lb. sodium arsenate in 2 (U.S.) gals, of water 

 to 1 (U.S.) gal. of stock kerosene emulsion is a most effective control 

 of certain bark and wood-boring insects. Special attention has been 

 given to the study of the European pine-shoot moth {Rhyacionia 

 bifoliana) and the European pine saw-fly {Diprio'n simile) which were 

 accidentally introduced shortly before the plant quarantine Act 

 became operative. 



Investigations of the insect enemies of vegetable and truck crops 

 have dealt with the insect enemies of potatoes and related plants, 

 sugar-beet, onions, beans, peas and cruciferous and cucurbitaceous 

 jilants. Research work on the control of the spinach aphis and other 

 Aphids by Coccinellids in Virginia is practically completed. The 

 control of insects injurious to stored products has received further 

 attention. Important experimental work in the control of insect 

 pests in greenhouses has been carried out, and work has been done in 

 the control of the Mediterranean fruit-fly {Ceratitis cnpitata) and 

 melon fly {Daciis cucurbitae). 



FuLLAWAY (D. T.). Report of the Division of Entomology. — Hawaiian 

 Forester and Agriculturist, Honolulu, xiii, no 12, December 1916, 

 pp. 438-439. [Received 27th February 1917.] 



During the month of November, the following parasites were reared 

 and distributed : Opius fletcheri (melon fly parasite), 2,608 females and 



