NEPTICULA. 303 
purpureo-tinetis, fascia recta pone medium, parum nitida, luteo-albida ; 
capillis ferrugineis. Exp. al. 24 lin. 
Head and face reddish-yellow. Palpi whitish. Antenne fuscous, 
basal joint whitish. Anterior wings pale golden-brown; beyond the 
middle is a straight, yellowish-white, slightly shining fascia ; the apex of 
the wing has a purplish tinge; cilia fuscous. Posterior wings pale 
grey, with pale grey cilia. 
Appears in May and August, but not frequently met with. The 
yellowish larva mines in hawthorn-leaves in autumn and July, but 
has not at present been distinguished from the larva of pygmeella 
and gratiosella. 
21. argentipedella, Zcll. Isis, 1839, p. 215; Sta.—mediofas- 
ciella, Haw.? Step.?—minimella, Zett.?  Alis anticis violaceo-nigris, 
JSascia latiuscula aloida pone medium ; eapillis xigris. Exp. al. 34 lin. 
Head and face black. Palpi dark grey. Antenne fuscous, basal 
joint whitish. Anterior wings black, with a violet gloss, with a rather 
broad whitish fascia beyond the middle, placed rather obliquely, being 
nearest the base of the wing on the costa; in the middle it is some- 
times interrupted ; cilia grey. Posterior wings grey, with paler cilia. 
Occurs among birches in May and June, but not common. 
It has been bred by Herr Bouché, from larvee mining in birch- 
leaves. 
22. Acetosze (Sta.), Shield, Zool. 1853, p. 4153. Alis anticis 
nitidis fuscis, pone medium violaceo-tinetis, fascia fere recta pone medium 
nitida alba; eapillis fuscis. Exp. al. 2 lin. 
Head fuseous. Antenne fuscous, basal joint whitish. Anterior 
wings shining fuscous, with a faint violet tinge beyond the middle; be- 
yond the middle is a nearly straight, shining, whitish fascia ; cilia fus- 
cous. Posterior wings pale grey, with pale grey cilia. 
Appears in May and August. ‘The larva mines the leaves of 
the sorrel in autumn and in July; the mine is very peculiar; it 
makes a series of concentric circles till, as though the centrifugal 
force at length became too great, it flies off at a tangent into an 
irregular tortuous gallery. It has only hitherto been met with 
by Mr. Shield, near Dublin, in some sorrel-plants growing among 
furze-bushes, consequently in sheltered situations. Mr. Shield 
has only succeeded in rearing a single specimen, which, with the 
view of disseminating information, he has very liberally placed 
in my collection; as it is extremely hazardous to describe Nepti- 
cule from single specimens, the above description of the perfect 
insect must be looked at as an approximation only; from the 
habit of the larva, no doubt can attach to its being a distinct 
species. 
23. plagicolella, n. sp. lis anticis nitidis fuscis, postice pur- 
; 
