STATES OF INSECTS. (Larva.) 231 
labours*. It is to be lamented that Reaumur was un- 
acquainted with the moth that proceeds from the pupze 
inclosed in these ingenious cocoons; which being small, 
and precisely of the same colour as the bark of the twig 
that supports them, are not to be discovered but by a 
very narrow inspection. It would seem, however, to be 
Noctua Strigula of Berkhausen, Pyralis strigulalis of 
Hubner’. The larva, he informs us, is found in May: 
its body is flatter than common, of a yellowish flesh- 
colour, clothed with tufts of red hair on each segment, 
and furnished with fourteen feet. Should this descrip- 
tion enable you to detect it upon your oaks, a view of its 
ingenious procedures would amply repay you for the 
trouble of seeking for it. The larvee of Cerura vinula, 
Stauropus Fagi, and several other moths, form their 
cocoons cf grains of wood gnawed from the trees on 
which they feed. ‘These grains they masticate, mixed 
with a glutinous fluid secreted from the mouth, into a 
paste, which forms a covering of an uniform smooth tex- 
ture, and so hard as not readily to yield to a knife. Of 
a substance apparently nearly similar is composed the 
cocoon of a weevil related to Liparus Pini ; which with 
its inhabitant was given me by the ingenious Mr. Bullock. 
A little moth, whose ravages have been before noticed *, 
lines the interior of the grain of barley, of which it has 
devoured the contents, with-silk; divides it into two 
apartments, into one of which it pushes the excrement 
it had voided, and in the other assumes the pupa ¢. 
These, and the other larvae mentioned above, com- 
* Reaum. i. 545—. 
® Pyral. 8. 3. é. iii. f. 16. Ennomos strigilata Treit ? 
* See above, Vou. I. p. 174—. 4 Reaum. ii. 491. 
