THE INJURIOUS SCALE INSECTS AND MEALY BUGS, &c. 247 
plants will admit, the paraffin emulsion gives excellent results. When 
the fruit of the vine becomes infested, the " bugs " should be removed 
with a camel's-hair brush, and a small quantity of methylated spirits 
applied to the egg- sacs. All plants subjected to the attacks of the pest 
should be thoroughly overhauled during the winter months. For pot 
plants such as Gardenias I have found it an excellent plan to remove 
them from the pit or house, lay them on their sides, and thoroughly 
" cut" the water into the under sides of the leaves with a syringe. In 
this way I have kept such plants in a thoroughly healthy condition, and 
almost free from bug. Palms are best sponged with the soft soap No. 4, 
or Gishurst's compound. Some prefer fir-tree oil, but the former give 
excellent results. Fig. 108 shows the characteristic cottony egg-sacs made 
by this species. 
Long-fringed Mealy Bug 
(Dactylopius lo7igispinus, Targioni-Tozzetti). (Fig. 109.) 
This is a less common insect than D. citri, but it is equally destructive 
Fig. 109. — Loxa-FRiNaED Mealy Bug 
(Dactylopius longispinus) on Oleander (nat. size). 
and difficult to keep in check. When perfect it may be easily recognised 
by the great length of the marginal appendages, which, at the anal 
extremity, sometimes exceed the length of the body. When the appen- 
dages get broken away— and this often happens — the insect cannot be 
distinguished from the preceding species except by microscopic exami- 
nation. 
Laburnum and Gorse Mealy Bug 
[Pseudococcus ulicis, Douglas). (Fig. 110.) 
Externally the females of this genus differ very little from the true 
mealy bugs " of the genus Dactylopius. They are a httle larger, but 
present the same mealy appearance, and also possess small marginal 
appendages. The only real difference lies in the number of joints to the 
antennae. In Dactylopius there are eight, and in Pseudococcus nine. 
