THE INJURIOUS SCALE INSECTS AND MEALY BUGS, &c. 251 
smooth trees. Like C. facji, when the tree trunk becomes overcrowded, 
the insects travel up to the main branches. 
The adult female is of a bright red or orange-red colour, almost 
globular, has six jointed antenn^p, and retains its legs, although it appa- 
rently never uses them. Thus it will be seen to differ very materially 
from Cfagi. 
The male is a very abnormal-looking creature without wings and 
without any distinct articulation between the head, thorax, and abdomen, 
and is altogether of a different character to any other male coccid with 
which I am acquainted. 
This species is very common in Cheshire, but is much less so in 
certain parts of Gloucestershire and Hertfordshire. Infested trees in 
Fig. 112.— Felted Ash Coccus 
{Apterococcus fraxini) on Ash bark (nat. size). 
ornamental and pleasure grounds may be treated in the same way as 
recommended for the Beech coccus. 
Two species of coccids found on grass in this country construct much 
more perfect sacs than either of the preceding species. The most 
interesting of these are those made by Uriopeltis festucce, Fonsc. The 
other species referred to is the Eriococcus insigiiis, Newst. It is much 
rarer, but more generally distributed. 
DIVISION V. 
Species which are active throughout life, and carry their young in a 
sac behind them. This includes the genus OrtJiesia, of which we have 
three indigenous species, and the greenhouse species described below\ I 
have also included the Egyptian Icerya, although it is by no means so 
active as the preceding insects. 
p 
