234 JOUEXAL OF THE ROYAL HORTICULTURAL SOCIETY. 
I have only met with Mr. Cockerell's variety on our cultivated plants^ 
but the type is common with us on imported Oranges. 
So early as 1843 Curtis called attention to Parlatoria proteus, which 
he then described for the first time. He says the insect was abundant oh 
Aloes and Amaryllis, but I find it chiefly attached to Orchids. It differs 
from its Croton relative by its greater transparency, and certain important 
structural details. 
Ash and Willow Scale 
(Chionaspis salicis, Linnaeus = Ch. fraxini, Signoret). (Fig. 101.) 
Of the three British species of Chionaspis, C. salicis is the only 
indigenous one. It is a very abundant insect, occurring in every county 
yet investigated ; and although commonly met with on the \Yillow and 
Ash, is found also on various other hard- wooded plants, such as Alder, 
Privet, Lilac, and many others. Willow or Osier beds are favourite 
resorts, and when such plants are attacked the twigs become " spolt " or 
brittle, and less valuable for basket -maknig. 
The covering scale of the female is white or greyish, and pear-shaped 
in outline. (Fig. 101, A.) At the narrow end of the scale the pale yellow 
moulted larval skin is generally conspicuous, although of minute size. The 
female is of a dark crimson colour, and when crushed gives a blood-like 
stain to the bark. The eggs are also of the same colour, and when 
crushed produce the same effect. 
The male scale is very much smaller than that of the female (as is 
always the case) and strongly ridged as in other genera. These often 
occur in such vast numbers as to completely cover the branches and the 
A 
I 
B 
Fig. 101. — Ash axd Willow- Scale 
{Chionaspis salicis) on branches of Ash (nat. size). 
