357 



then thoroughly drying them. If an attack is noted in the field, the 

 bulbs should be taken up and burnt and the top soU deeply buried 

 in September or early October. 



Cockayne (A. H.). The Wood-borer and its Control. — New Zealand 

 Jl. Agric., Wellington, xviii, no. 4, 21st April 1919, pp. 198-199, 1 



%• 



The boring beetle, Ancbium domesticum, causes great damage in 

 New Zealand. Although a large variety of timber is attacked, a 

 preference is shown for white pine and kauri pine [Agathis australis] 

 of which the heart- wood is usually affected. In other timber it is 

 generally the sap-wood that suffers. 



The life-history of A. domesticum in New Zealand seems to be the 

 same as in Europe and America. 



Removal of infested timber should preferably take place in late 

 autumn to early spring, infested material being at once destroyed. 

 Joists, etc., may be sprayed with a solution of lead arsenate at the 

 rate of 1 lb. to 28 gals, of water. 



Where possible in houses the affected timber should be removed ; 

 if remedial measures have to be resorted to, the affected parts 

 should be sprayed in November, December and January 3 times, 

 with a mixture of 5 parts of benzine to 1 part of creosote or a mixture 

 made by dissolving the equivalent of 2 moth balls of naphthaline to 

 every J pint of benzine. In treating furniture it is advisable to inject 

 benzine and creosote into each hole and stop the entrance with a 

 pellet of soap. 



EsAM (G.). Insect Pests in Orchard Nursery Stock. Control of Red 

 Mite and Woolly Aphis. — -New Zealand Jl. Agric, Wellington, 

 xviii, no. 4, 21st April 1919, pp. 216-217. 



Experiments made on two-year-old apple-trees to control red mite 

 \T etranyclms] and woolly aphis [Eriosoma lanigerum] showed that 

 fumigation and also dipping in lime-sulphur (1 to 6) are of no value, but 

 dipping in oil for 3 minutes at a strength of 1-10 was successful. 



VosLER (E. J.). Some Work of the Insectary Division in Connection 

 with the attempted Introduction of Natural Enemies of the Beet 

 Leafhopper. — Mthly. Bull. Cal. State Commiss. Hortic, Sacramento, 

 viii, no. 5, May 1919, pp. 231-239, 9 figs. 



Since Eutettix tenella, Baker (beet leaf-hopper) is known to be the 

 agent transmitting curly-leaf disease to sugar-beet, the author under- 

 took two journeys to Australia with a view to introducing into Cali- 

 fornia the natural enemies found there. A small leaf-hopper was 

 found to be parasitised to the extent of 85 to 90 per cent, by two egg- 

 parasites, Pterogranvma acuminata and a Mymarid ; attention was 

 therefore concentrated upon these two species, and they were trans- 

 ferred to California and reared in sufficient numbers to give them a fair 

 trial. The experiment, however, was a failure, and it must be con- 

 cluded that E. tenella is an unsuitable host. 



