J0OL?sAL OF THE EOTAL HOKTICrXTXTRAL SOCIETY. 
{LiCiXnium persica) and the Currant Cushion Scale {Palvinaria ribesitB) 
may he taken as examples. 
(3) Species eoTeriDg their hodies with a white mealy sahstance. This 
iDcludes the "mealy bags "* (DacfyiopiM^), which finally envelop them- 
selves in a loose conony material. 
{4: \ Species completely enveloping their bodies in a cottony or felted 
mater! ?.! :*: r-i::r.r a complete sac. Typical examples are the Beech Coecns 
{Cri and tlie Ash Cocens {Apterococcus fraiini). 
\b) Sj-^rCicS covering their bodies with plates of white wax (Orthesia 
ins ignis, kc. . 
DIVISION I. 
Species protecting their bodies with a scale or shield, which com- 
FiG. 94. — SiciiT STKAW-'rc'T'OrEET' Caz^tujji oi: Fig Scaue 
(JL-5 : Fig (nat. size). 
pletely covers the sublymg insect. The females of this division are 
shaped more or less like a flattened peg-top, and are without legs or 
horns, and the eyes are often not traceable. {See Fig. 99, D.) There 
is also no diTision between the head, thorax, and body, the articalation 
of these parts beine - r-y visible. 
SnAii STi.A.v-c : : :a ob Fig Scai.e 
{Aspidiotm c u|. (Fig. 94.) 
The scale or covering is shap^ed somewhat like a limpet, with the 
pointed portion a little to one side, and sometimes it is slightly turned 
over. The colour is dull yellow, ochreous, or straw-coloured. On 
removing the scale from the plant a white circular patch of secretion is 
