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HYPONOMEUTA. 59 
impossibility now to discover which species he intended by the 
name of Evonymella ; and Scopoli having correctly described, 
under that name, the larva and imago of one species, I have had 
no hesitation in adopting his name, as the earliest name to which 
no doubt is attached. Almost every succeeding writer has fol- 
lowed the bad example of Linneus, without attempting to prove 
the correctness of his assertions. 
Of this genus we have six British species (two others are known 
on the continent) which may be easily distinguished as follows :— 
a. Anterior wings leaden-grey. 
b. With a black spot in the cilia of the hinder margin. Species 1. 
6b. With no black spot in the cilia of the hinder margin. Species 4 
(some varieties). 
aa. Anterior wings white. 
c. With dark blotches or clouds. Species 2, 8, 4 (some varieties). 
ec. With no dark blotches or clouds. Species 5, 6. 
1. vigintipunctatus, Retz. G. et S. 52. 153 (1783); Zell. Isis, 
1844,—Sedella, Treit.; Dup.; Step. Zool. 1844. p. 687; Sta. Zool. 
1848. p. 2272. Alis anticis saturate plumbco-griseis, seriebus tribus lon- 
gitudinalibus punctorum nigrorum, ciliis dilute griseis, macula infra 
apicem saturate fusca, Exp, al. 7 lin. 
Head and face dark grey. Palpi pale grey. Antenne greyish-fus- 
cous. Anterior wings rather dark leaden-grey, with three longitudinal 
rows of black spots; the first near the costa terminating rather beyond 
the middle, the other two on each side of the fold not reaching to the 
hinder margin; cilia pale grey, with some dark fuscous scales imme- 
diately below the apex. Posterior wings greyish-fuscous, with paler 
cilia. 
Almost unique in this country; one specimen taken by Mr. 
Stephens at Norwood. ‘The perfect insect is double-brooded, ap- 
pearing in April and May, and again in August. ‘The larva ap- 
pears in June and July, and again in September and October ; it 
feeds on the Sedum Telephium. 
2. plumbellus, W. V. 139. 34 (1776); Fab. ; Hiib.; Godart ; 
Treit.; Step.; Dup.; Zell.; Frey. N. B. v. pl. 420.—plumbea, Haw. 
Alis anticis albis, grisescente-suffusis, apive satwrate fusco, sericbus qua- 
tuor longitudinalibus punctorum nigrorum, punctulis nigris marginem 
posticum versus, macula nigra in medio plice ; ciliis saturate fuscis, an- 
gulum analem versus albidis. Exp. al. 83-9 lin. 
Head, face, and palpi whitish. Antennae dark fuscous. Anterior 
wings white, with a slight greyish tint, with four longitudinal rows of 
black spots, two near the costa and one on each side of the fold; near 
the hinder margin is a transverse xow of small black spots, preceded 
by a few black spots irregularly placed ; in the middle of the fold is a 
