1 June, 1898.] QUEENSLAND AGRICULTURAL JOURNAL. 495 
original home is, however, of great importance, since it is to be expected that, 
in its native country especially, natural enemies will be found occurring to 
keep it in check that may be transported, for the purpose of serving a similar 
purpose, to the lands whither it has preceded them. 
In Australia it has found its way to Western Australia (C. Fuller), South 
Australia (W. M. Maskell), Victoria (C. French), (?) Tasmania,* New South 
Wales, and Queensland. é 
The history of its occurrence in Australia will be found given in the 
portion of this article relating to the Australian Bibliography of the San José 
Scale, pp. 508, and need not here be repeated. Suflice to remark that the 
announcement of its arrival there was first made known by A. Olliff, late 
Government Entomologist of New South Wales, in September, 1892 (A), and 
that this discovery was confirmed by the present writer in February, 1895 (C), 
after doubts had been expressed on Olliff’s determination by the late W. M. 
Maskell, by whom insects from the same source were referred to Aonidea (B). 
At the close of 1895, R. Hoggan, of Ballandean, submitted specimens 
illustrative of what he regarded as being a destructive fungus growth, and that 
occurred upon certain deciduous trees (peaches and plums especially) that he 
had received during the previous year from a New South Wales nursery, to 
this Department. ‘These, in the absence of the entomologist from the colony, 
were forwarded to the Department of Agricultare of New South Wales for 
identification, and were pronounced by Dr. N. A. Cobb, by whom they were 
received, to be Aspidiotus perniciosus. arly in 1896 this occurrence was 
verified, and additional ones discovered, in the course of a personal visit made 
by the writer to the district indicated ; the original infested trees in every 
instance being stated to have been derived in 1894 from one and the same source. 
This discovery of Aspidiotus perniciosus in Queensland was announced in the 
Annual Report of the Entomologist for 1895-6. (Tryon, G., pp. 38, 41.) 
From 1896 to the present date, additional occurrences in the colony of 
Pernicious Scale have been brought to light, especially during 1898, as a result 
of inspections of orchards and gardens, made by Messrs. W. Sontter and 
8. ©. Voller. Moreover, a second New South Wales nursery has been found 
to have been widely disseminating infested trees. 
The insect has also been detected on several parcels of fruit (apples) 
received from New South Wales during the current year. 
FOOD-PLANTS. — 
According to L. O. Howard, Entomologist to the United States Depart- 
ment of Agriculture, the Pernicious Scale has been seen at the Division of 
Entomology on the following trees :—Apple, crab-apple, quince, pear, Bartlett 
pear, dwarf Duchesse pear, plum, Japan plum, Satsuma plum, Prunus pissardi, 
Prunus maritima, peach, apricot, almond, cherry, Rocky Mountain dwarf 
cherry, currant, black currant, Citrus trifoliata |“ this should have been 4A, 
albopunctatus,” fide Cockerell], Osage orange, grape, elm, cottonwood, 
European Linden, American chestnut, Pyrus japonica, Catalpa bignontordes, 
walnut, Japan walnut, loquat, red dogwood, juneberry, rose [“‘it is quite bad 
on garden roses,” fide Cockerell], sumac, Carolina poplar (T. D. A. Cockerell, 
XIIL., p. 917), to which list must be added, on the authority of the late OVE 
Riley (cf. VILL., p. 92) pecan and persimmon. It must not, however, be inferred 
from these statements that the insect is equally harmful to all of these plants. 
It may possibly have occurred in South Australia, Western Australia, and 
Victoria upon Hucalyptus also. 
* Some apples, known to the trade as scarlet pearna i stated to have come from Tasmania, 
were found in Brisbane in April, 1898, by E. H. Rainford, Viticultural Expert, one of the 
inspectors under ‘* Zhe Diseases in Plants Act, 1896,” to be infested with a scale that proved on 
examination by the writer to be the Pernicious Scale. 
+ Vid. Supplementary Note p. 507. 
ni 
