228 JOURNAL OF THE EOYAL HORTICULTURAL SOCIETY. 
gregated at the base on the under side of the leaves and the upper 
portions of the midrib, while the females scatter themselves over the more 
exposed parts of the leaves and the basal portion of the leaf-stalks. The 
specimens shown in the illustrations were taken from the same Palm leaf 
showing at fig. 97, A, the basal portion of the leaf with the females, and 
at B part of the upper portion of the same leaf with the hordes of male 
scales. 
The pretty little bright orange-red male may often be seen struggling out 
of its woolly covering, which, to my mind, certainly does not facilitate but 
retards its escape. They enjoy a bright hot summer day, and often occur 
in considerable numbers at such times. But to the naked eye they 
appear only as minute orange-coloured specks. 
This is certainly one of the commonest of our greenhouse pests, thriv- 
ing best in heat. It is partial to monocotyledons, especially to young 
pot Palms, and is frequently troublesome to Calanthes and other Orchids. 
It occurs in almost every part of the world on cultivated plants, and is 
found in the open air in the West Indies, Sandwich Islands, and 
elsewhere. 
Small Scuefy Junipek Scale 
[Diaspis carueli, Targioni-Tozzetti=D. juniperi, Bouche). 
As a British insect this species has only recently been discovered. It 
is possible it may be indigenous to this country ; but it is highly 
probable it has been introduced from other parts of Europe, where in the 
southern portions it is a very common insect, and Professor Comstock has 
found it in the United States. 
My examples were forwarded to me from the London district, on 
branches of Juniper (/. virginiana), cut from a home -raised plant. Every 
branch and leaf were crowded with the scales, which gave the branches 
quite a scurfy appearance, and, judging from their numbers, must have 
weakened the constitution of the plant. 
In form the covering scale of the female may be generally described 
as more or less irregular ovate, very thin, dirty white, and readily falls 
from the plant. Quantities of them placed together on a dark back- 
ground exactly resemble scurf. The female is very minute, and of a 
greenish-yellow colour. 
T am not in a position to state which of the insecticides would be best 
for application to this insect ; very probably No. 1 would have the desired 
effect, and whatever is used can only satisfactorily be applied in the form 
of a spray. Seeing the extreme readiness with which the scales fall from 
the food-plant, one might very well remove large numbers with a brush. 
Such work, however, could only be carried out on plants which had not 
attained any great size. 
Scurfy Eose Scale 
{Diaspis [Aulacaspis] roscEy Sandberg). (Fig. 98.) 
This is an indigenous species, occurring freely on various Wild Koses 
in hedgerows and sheltered places in many parts of England. It is a 
