STATES OF INSECTS. (Larva.) 183 
author that notices them, and has given a description 
and figure of one species under the name of Coccus floc- 
cosus*. It was discovered by Modeer upon some sere 
fir-leaves in a thick bed of moss. Panzer has figured a 
second found upon Geranium sanguineum, which from 
the figure appears distinct from De Geer’s, under the 
' name of Coccus dubius*. Fabricius regards this as syno- 
nymous with the Dorthesia characias of Bose, inhabiting 
Euphorbia characias in South Europe *. Olivier found 
a species upon the bramble*. I once took one, which 
appears to differ in some respects from the preceding spe- 
cies, upon Melampyrum cristatum, and our indefatigable 
friend Mr. Sheppard has sent me another, on what plant 
found I do not remember, which does not agree with any 
that I have mentioned. The body of the animals of this 
genus is covered by a number of cottony or waxy laminze 
which partly cover each other, and are arranged usually 
in a triple series: in De Geer’s figure the series appears 
quadruple, the lateral ones being placed obliquely. The 
anterior one in my specimen covered the head, and they 
are all canaliculate. Above the anus are four diverging 
ones: the whole are of the most dazzling whiteness. 
When these laminze are removed, the body appears di- 
vided into segments. 
With respect to those larvee which imitate slugs by the 
viscid covering that besmears them and issues from their 
pores, we learn from Professor Peck that this exudation 
takes place as soon as they are hatched ; that the animal 
retains its humidity although exposed to the fiercest heat 
of the sun, and that at the last moult the skin becomes 
* De Geer, vii. 604. ¢. xliv. f. 26. > Fn. Germ. Init. xxxvi. 21. 
* Syst. Rhyng. 311. 29. « NW. Dict. d Hist. Nat. 1x. 554. 
