22 
of fever contracted while on a scientific trip to New Guinea. I also 
met the man who had been employed at the time in 188G when Mr. Hart- 
mann received an illustration from Brisbane of Icerya,and directed him 
to look over the trees for specimens, when several scales were found. 
Since then, however, none have been found. While looking over the 
lemon and orange trees I found one single nearly full-grown specimen, 
but aside from this no trace of them. A peculiar Ooccid resembling 
Icerya somewhat in structure was found on an apple-tree. The gentle- 
man informed me that Icerya was always most noticeable in wet seasons, 
but that it never appeared in such numbers as to be injurious. 
I found here in abundance the large hemipterous insect so destruct- 
ive to the orange in Queensland and New South Wales. A second 
species somewhat smaller than this, yet equally mischievous, was found 
at Adelaide (Fig. 10). Trees were observed at this place with all the 
fruit and most of the young 
shoots destroyed. Both spe- 
cies live and grow upon the 
sap of fruit and tender 
twigs.* Aspidiotus aurantii 
was present here in numbers 
and also Lecanium olece, both 
upon oranges; the latter, 
however, is kept well in 
check by a lepidopterous 
fana — natural size (Noctuid)lSiTVa, ThalpOCliareS 
(original). cocciphaga.Me jrick (Fig. 11). 
Several young orange trees had been completely cleaned by larvae, and 
eight chrysalids were found upon a young plant. Mr. H. Hartmann 
also informed me that near Brisbane a dipterous larva existed which 
occasionally destroyed all the orange crops, and in 1886, which was a 
very wet season, a dipterous larva destroyed not only all the oranges 
but also nearly all the other fruits, even the apples and pears. He also 
gave me the following list as blight-proof apple-trees: "Northern Spy, 
Majetin, Irish Peach, Streaked Peach, Hartmann's Seedlings Nos. 1 and 
5, New England Pigeon, Shepherd's Perfection, Chubb's Seedling, Oan- 
vade, Flushed Peach." 
On January 5, having obtained free passes for the Queensland rail- 
ways, I left Toowoomba for Brisbane. On my arrival at the hotel I met 
with specimens of Icerya on an ornamental plant in the passage-way. 
This and a few other specimens lbund in gardens through the city were 
all I could find, yet in damp seasons they occur sometimes in numbers, 
as I learned from several gentlemen acquainted with the insect. 
Mr. Henry Tryon, assistant curator of the Museum, kindly introduced 
me to several persons in Brisbane. He himself was about to publish a 
*The second of these insects is Mictis prof ana Fabr., and the other is a species of 
Aspongopus. 
Fig. 
Mictis pro- 
Fig. 11. — Thalpochares cocciphaga— 
slightly enlarged (original). 
