15 
oranges, viz: Lecanium olece (Fig. 6) and the Mytilaspis and Aspidiotus 
aurantii. This latter is not doing any serious damage to his trees, pro- 
viding they are well taken care of, yet he assured ine that in some parts 
of the colony it is impossible to raise oranges on account of the ravages 
of this scale. For the Mytilaspis he uses sulphur and lime as a wash* 
applying it with a paint brush. This he claims need only be repeated 
every three years, as during this time the trees remain comparatively 
free. The mixture is prepared in the following way : 
Unslacked lime, two parts; sulphur, one part ; water is poured on this 
in sufficient quantities to boil and unite with it. It is applied as a 
white-wash to the trees and to prevent injury should not be too strong 
Fig. 6.— Lecanium olece: 1, adult females on olive leaves— natural size; la, female -enlarged (after 
Comstock). 
Besides the scales, an Aphis appears occasionally on orange and peach 
trees. Two beetles are numerous and destructive to the melon vines 
here. One of them found at the time is a Diabrotica, often received by 
Mr. Crawford, of Adelaide, as doing great injury to the melon tribe. 
This gentleman, however, claims that all injury can be avoided by dust- 
ing powdered lime over the plants. The beetles, he said, will not at- 
tack leaves thus treated. I found here, as well as all over Australia 
and New Zealand, the Woolly- Aphis (Schizoneura lanigera), yet they 
could be seen only on the branches, as all or nearly all the apples raised 
in the colonies and New Zealand are said to be grafted on blight-proof 
