o 
76 STATES OF INSECTS. (Lgg.) 
is found in the female of Lasiocampa Pityocampa, is des- 
tined for the same purpose?*. 
Reaumur had once brought to him a nidus of eggs 
clothed still more curiously: they surrounded a twig in 
a spiral direction, like those of Trichoda Neustria, but 
were much more numerous, and were thickly covered 
with fine down, not pressed close, but standing off hori- 
zontally, which assumed much the same appearance as 
a fox’s tail would if twisted spirally round a branch °. 
A procedure nearly similar was observed by De Geer 
in some species of Aphides (A. Alnz and A. Prunz), which 
covered their eggs with a white cottony down detached 
from their belly by means of their hind legs‘. In this 
case, however, the eggs were separately coated with the 
down, but there was no general covering to the group. 
Several insects make the leaves and other parts of 
plants serve as coverings for their eggs. Hylotoma 
Rose, a saw-fly, and other species of the same genus, with 
their saws make an incision in the green twigs of shrubs 
and trees, and fill it with a line of eggs placed end to 
end, taking care that, as the eggs grow after they are 
laid, they are placed at such distances as to leave room 
for their expansion’. Lhynchites Bacchus, a brilliant 
weevil, well known to the vine-dressers for the injury it 
does °, rolls with much art the leaves of:the vine, so as to 
form a cavity, in which it places its eggs; other species 
practise similar manceuvres ; and some probably place 
their young progeny in the interior of twigs, making an 
opening for that purpose with their rostrum—at least, I 
* Reaum. ii. 97. 159. > Tbid. 107—. ¢. 1. fi 15. 
© De Geer iii. 48. 51. 4 Reaum. y. 122. 
© See above, Vor. I. p. 198. 204. 
