40 BULLETIN 1329, U. S. DEPARTMENT OF AGRICULTURE 
The oil, water, and soap are placed in a tank and heated until the 
contents come to a boil. Just before boiling a brown scum appears 
on the surface of the mixture, and as the boiling starts the brown 
scum will begin to disappear. At this stage the heat should be cut 
off and the entire mixture pumped twice under a pressure of about 
60 pounds while still very hot. The first pumping may be made 
from the tank into a second container. The second pumping can 
then be made back into the original container or into barrels or 
other storage receptacles. 
Heating the mixture is not sufficient to produce an emulsion. The 
mixture should be boiled, but it is not necessary that the boiling 
continue more than a few minutes. In pumping, the entire contents 
should pass through a pressure pump twice. A rotary pump should 
not be used. Stirring will not produce a proper emulsion, nor should 
the mixture be allowed to cool before it is pumped. 
This stock emulsion is to be used diluted at the rate of 1 part to 66 
parts of water. Several sprayings are necessary, about 10 days 
apart, employing pressure to reach as many scale insects as possible. 
ASTEROLECANIUM MILIARIS LONGUM 
Another scale (Asterolecanium miliaris longum Green) , closely re- 
lated to the bamboo soft scale, is found on bamboo in Florida. This 
species apparently infests only the leaves, attacking both sides. The 
scale is long and narrow, from 1% to 1% millimeters (2V to yV inch) 
long by about % millimeter (^ inch) wide, and is moderately con- 
vex. It is glossy in appeamnce and, like the preceding species, 
varies from semitransparent and colorless to translucent tinged with 
yellow or green. The posterior end is drawn out into a blunt point, 
and the marginal fringe is short and imperfect. 
This scale is recorded only from bamboos in Florida, where it is 
found at Coconut Grove, Key Biscayne, Miami, Oneco. Orlando, and 
Tarpon Springs. 
The method of control used for the preceding species will probably 
be found satisfactory. 
COTTONY BAMBOO SCALE 
The cottony bamboo scale {Antonina crcmi Ckll.) has been found 
on bamboos in Xew Jersey and California. The adult female scales 
are from one-eighth to nearly one-fourth inch in length. The scales 
are completely covered with a thick, white cottony coat which makes 
them very conspicuous. They collect in rather large masses in the 
leaf axils of the canes. 
The mature females are found in May and June, and the young 
settle on the leaves and tender growth. In the winter the insects are 
found in the leaf axils of the harder growth. 
The cottony bamboo scale is recorded as quite injurious when 
abundant, rendering the bamboo unsightly and stunting its growth. 
It appears to prefer small suckers to large hardy plants. 
In California the scale is found in the southern and central parts 
of the State and in New Jersey at Riverton. It appears to be 
restricted to bamboo and is found at least in both black-joint bamboo 
(Phyllos-fachys jmherxtJa nigra) and golden Japanesse bamboo 
{Phyllostachys aurea Carr.). 
