70 PLUTELLID®. 
riorly attenuated; the apical vein is ficate. The larva forms a close 
silken cocoon, 
The insects of this genus appear at the end of summer and au- 
tumn; many of the late species hybernating, and being again met 
with in the spring; when at rest they are easily disturbed, but 
generally drop only from one portion of the bush or hedge to 
another, and rarely make use of their wings. The larva of C. 
axylostella (green, with a broad red stripe on the back) is the most 
generally met with; it is attenuated anteriorly, extremely active, 
and, when full-fed, constructs a very firm, close silken cocoon. 
The neuration of the anterior wings is not identical in all the 
species, as may be seen from the following table :— 
_ A, Apical vein fureate ; below it five veins from the discoidal cell. 
B. The three lowermost of these veins are not united at their origin. 
Species 1-5. 
BB. The two lowermost of these veins are united at their origin. 
Species 11, 12. 
A A. Apical vein simple; below it six veins from the discoidal cell. 
c. The three lowest of these veins are not united at their origin. 
Species 7. 
cc. The penultimate and antepenultimate of these veins, proceed 
from the same point. Species 6, 8-10. 
The twelve British species may (without denuding the wings) 
be placed in the following table ;— 
a. The cilia of the anterior wings not retuse below the apex. Sp. 1—4. 
aa. The cilia of the anterior wings retuse below the apex. Sp. 6-7. 
aaa. The anterior wings slightly caudate. Species 8-10. 
aaaa. The anterior wings caudate. Species 11, 12. 
1. sequella, Clerck, I. Pl. x. f.14 (1759); Linn.; Fab.; Godart ; 
Haw.; Treit.; Step. ; Dup.—nyctemerella, W.V.; Pab.—pusiella, Linn. ? 
Alis anticis a/éis, vitta dentata dorsali nigra, striis numerosis cost ab- 
breviatis nigris, apice coste margineque postico nigrescente-punctatis. 
Exp. al. 8 lin. 
Head, face, and palpi white. Antenne blackish, Anterior wings 
white, with an indented black blotch on the inner margin, reaching be- 
yond the middle; at the base and between the indentations it touches - 
the fold, and at its hinder end it crosses the fold; along the costa are 
several short black streaks, a more conspicuous one in the middle, 
sloping inwardly, reaches nearly half across the wing, and an irregular 
black mark beyond the middle of the costa, almost unites with the ter- 
mination of the blotch on the inner margin; along the apex of the costa 
and hinder margin, and at the anal angle, are some black or blackish 
marks; cilia white at the apex, in the middle of the hinder margin 
and at the anal angle blackish, Posterior wings grey, with paler cilia. 
