206 Transactions.—Zoology, 
the third, fourth, and seventh the longest, and about equal to one another ; 
the fifth and sixth somewhat shorter. There are a very few hairs on most 
of the joints, but the seventh has a good number. 
The feet are moderately long; the coxa thick, the femur moderately 
large and about the same length as the tibia which is somewhat thinner, 
the tarsus still narrower, tapering to the claw. The upper pair of digitules 
above the claw are pretty long, ending in a very small knob; the lower pair 
are about twice the length of the claw, very broad. 
The general outline of the body (fig. 12c) is oval, but varying in eccentri- 
city. On the holly and ivy in our gardens it forms a pretty regular ellipse ; 
on the Portugal laurel it is more elongated; on the orange nearly circular. 
It is covered with minute specks, and a row of small hairs, not very close 
together, runs round the edge. There are four stigmata, as shown in plate 
VL, fig. 10c, and opposite each, at the edge, is a depression with three 
strong spines, of which the middle one is much longer than the other two. 
At certain stages of the life of the insect, on lifting it from the leaf, cottony 
trails may be seen on the plant marking the position of these stigmata, an 
appearance usual, according to Signoret, amongst the Lecanide. 
The male of this species is unknown. 
Lecanium hesperidum is said to be always viviparous. In the Diaspide, 
the female lays her eggs in a prepared nest; in the Lecaniew she becomes 
herself the nest of her young. About April, in this country, on turning 
over one of the females, it will be seen that on the under side of the body, 
there is a broad deep-red cavity, between which and the leaf numerous 
young ones run briskly about. Inserting the insect into some transparent 
fluid, such as glycerine or balsam, the body is seen to be full of eggs; but, 
with the exception of some minute white objects amongst the brown young 
ones which might be remains of shells, no eggs are visible outside her. I 
am unable to account for the blood-red colour of the cavity. Signoret 
speaks of it as ‘‘a mortified spot;" but it sometimes occupies nearly half 
the under surface of the body, and at the same time the insect is not dead. 
The interior substance, which, in mounting for the microscope, is pressed 
out of the body, is not red but yellowish brown. 
This insect is becoming a veritable pest in this country. Hollies, ivies, 
Portugal laurels, and many other trees in our gardens are every year 
becoming more and more infested with it. Whatever may be the chances 
of keeping it down in greenhouses, it is to be feared that a cure for plants 
out of doors is next to impossible. 
2. Lecanium depressum, Targioni. 
This is an European species, occurring here in our greenhouses. The 
adult female is oval, not so flat as Lecanium hesperidum, and with the skin 
curiously marked with a mosaic pattern, 
| ESSA on Gan GE ToS Rp EO A TOT AEN eee eR ase REOR a A eae ei aa Rt TERT PORE SEC 
