ADELA. 49 
This genus certainly requires subdivision, hardly two species 
showing an entire accordance; the British species may be arranged 
in the following table :— 
a. Antenne not much longer than the body, in both sexes nearly of 
equal length. Face roughly haired nearly to the mouth. Species 1. 
aa. Antenne considerably longer than the body, in the 9 generally 
shorter than the @. Face, at least beneath, clothed with smooth 
scales, 
6. Head densely haired. Antenne of the ? nearly as long as in the 
&; only the lower part of the face smooth. Species 2. 
6 6. Mead thinly haired. Antenne of the ¢ very long, of the 9 much 
shorter. ace quite smooth. Species 3, 4. 
«aa. Antenne long, in the ? shorter. Face and legs of the g very 
hairy. 
e. Tongue and basal joint of the antenne of the g very hairy. The 
basal half of the antenne of the § much thickened; face of the ? 
smooth. Species 5. 
ee. Tongue and basal joint of the antenne in the & not hairy. 
The basal half of the antenne of the 9 not thickened ; face of 
the 2 hairy. Species 6. 
Several other species are known on the continent. 
1. Pibulella, W. V. 143. 33 (1776); Dup.; H.-S.; Zell. ; Fab.? 
—Frischii, Naw.—Latreillella, Step.? Alis anticis cupreo-fuscis, ma- 
cula dorsi pone medium transversa dilute lutea. Exp. al. 43 lin. 
Tead, face, and palpi black. Antenne black, the last fourth white. 
Anterior wings coppery-fuscous, with a pale yellowish spot near the 
base, not touching either margin (sometimes wanting), and on the 
inner margin beyond the middle a transverse pale yellowish spot, fre- 
quently reaching more than half across the wing ; cilia coppery-fuscous. 
Posterior wings dark violet-fuscous, with paler cilia. 
Abundant in May and June on the flowers of Veronica Oha- 
maedrys. 
2. rufimitrella, Scop. I. C. 251. 649 (1763); Zell. L. E. viii. 
—Frischella, Hiib.; Treit.; Dup.; Zell. Isis, 1839.—Reaumurella, 
Step.? Alis anticis saturate viridi-seneis, costam versus paullulum cu- 
preo-tinetis, Exp, al. 44 lin. 
Head behind greyish-ochreous ; in front and the face dark fuscous, 
inclining to black. Antenne purplish-black. Anterior wings dark 
bronzy-green, towards the costa rather coppery ; cilia bronzy-grey. 
Posterior wings wings dark violet-fuscous, with dark grey cilia. 
Common in May, in meadows, on the flowers of Cardamine 
pratensis. 
3. Sulzella, W. V. 143. 24 (1776); Hitb.; Treit.; Step. ; Dup. 
—Sulizii, Waw.— Sulzeriella, H.-S. ; Zell—Podaella, Don.; Linn. ? 
Alis anticis luteis, saturate violaceo-fusco striatis, fascia paullulum pone 
VOL. 111, z 
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