442 On an Insect which is occasionally 
this description applies only to the Lack of the larva, as both the 
belly and sides have other similar mamillz, which it is unneces- 
sary to particularize. The period in which these insects exist 
in the larva state, is, as far as my observations extend, about a 
year; during the whole of which, except in winter, when they 
probably lie torpid, thev are employed in boring into the bark 
and alburnum. As the female moth seems to deposit her eggs 
through the whole summer, the larva may be always met with, 
aud of very different sizes, 
Chrysalis.—The Jarve which are then full grown, and these 
are the greater number, assume the state of chrysalis about the 
latter end of May, soon after which time mauy of the empty husks 
from which the moths have escaped, may be seen projecting 
from the bark: and from this period, to the end of summer, 
others, lying still undisclosed within their silk-lined cavities, are 
found on cutting into the wood. The chrysalis has the usual 
sub-conical shape of those of the tribe of Tortrices. It is about 
one-third of an inch long, and a line broad in the widest part; 
of a pale yellow colour when first disengaged from the larva, but 
nearly brown when mature; and smooth, except that each ab- 
dominal segment is set with two transverse lines of acule?, or lit- 
tle teeth, pointing towards the tail, of which those in the line 
nearest the head are larger and fewer in number than those in the 
line next the tail. These aculez, which are found in the chrysalis 
of most species of Tortrix, evidently serve for enabling the insect, 
when in this state, to move itself to the entrance of the orifice in 
the bark, previously to escaping in its perfect form. ‘The tail, 
when viewed under a lens, is found to be furnished with seven 
or eight minute hooks. : : 
Perfect Insect,—After remaining in the chrysalis state about 
ten days, the moth breaks forth. Of this the following is a de- 
scription ; . 
TorTRIX W@BERANA. 
T.—Upper wings chocolate-brown, variegated with orange and 
silver streaks. 
Pyralis Woeberana. Fabricius Mant. Ins. U1. p. 230. n° 52. 
—Ent. Syst. Ill. ii. p. 259. n° 71, . 
Tortrix Woeberana. Wiener Verzeichniss, 4to edit. 126. 9.3 
8vo edit. II. 43.. Fam. B. n° 9.— Haworth Lepidopt. 
Brit. p. 457, n° 201. 
Phalena Tortrix Woeberana. Gmelin Syst. Nat. 1. p. 2511.— 
Turton’s Translation, Il. p. 350.—Brahm Insekten Ka- 
lender II. p. 252. n° 145.—De Villers Ent. Linn. IV. 
p. 525. fe 
Tortrix ...... Hiibner Schmet. Tort. 32. 6. 
De- 
—— se 
