284. LYONETID&, Sena 
similarity. We have only two British species. Of one, Clerchkella, 
the larva has been observed ; it mines in the leaves of apple (and, 
according to Curtis, elm) ; it has sixteen legs; it quits the leaf 
when full-fed and spins a silken cocoon, which it suspends in a 
horizontal position by silken threads. 
1. Clerckella, Linn. 8. N. (10), 542. 299 (1758); Treit.; Dup.; 
Zell. ; Sta.—cerasifoliella, Wiib. Tin. 190.—WMalelia, Schr.—autumnella, 
Curt. B. E. fo. 284; Step.—nivella, Step.—var. ereella, Treit.—semi- 
aurella, Step.—Fonscolombella, Dup. lis anticis albis vel albidis, vel 
eeneis, macula disci pone medium longitudinali fusca, striolis coste pos- 
ticis fuscis in maculam fuscam ante apicem decurrentibus, puncto apicis 
atro. Exp. al. 4 lin. 
Head white or whitish. Face and palpi white. Antenne fuscous ; 
the basal joint white. Anterior wings white; beyond the middle is a 
longitudinal fuscous blotch on the disc, beyond which is a narrow fuscous 
fascia, followed by three short fuscous costal streaks, which unite with a 
fuscous blotch ; at the apex of the wing is a deep black spot, from which 
two short fuscous streaks diverge into the grey cilia. The wings are 
sometimes entirely of a deep bronzy-fuscous, when, except the apical 
spot and costal streaks, no markings are apparent, and there are various 
intermediate varieties. Posterior wings grey, with grey cilia. 
Not uncommon in many places ; appearing in June and August, 
and hybernated specimens in the spring. ‘The larva makes long 
tortuous flat mines in the leaves of apple-trees in July, September, 
and October. 
2. padifoliella, Sta. Zool. 1848, p. 2160; Hiib.? Treit.? Bouché? 
—acerfoliella, Curt.—albella, Eyers.? Alis anticis niveis, vitta lata 
costali fusca, dorsum versus sinuata et saturate fusca, striga obliqua pone 
medium dorsi apicem versus producta saturate fusca, puncto apicis atro 
caudulam emittente. Exp, al. 44 lin, 
Head, face, and palpi white. Antenne fuscous; the basal joint 
white. Anterior wings snowy-white, along the costa broadly fuscous ; 
this fuscous streak is, towards the inner margin, sinuated, and is here 
very dark fuscous, much darker than on the costa; beyond the middle 
of the inner margin is a dark fuscous streak, which runs obliquely to- 
wards the apex of the wing; at the anal angle is a small dark fuscous 
patch; at the extreme apex is a deep black spot; costal cilia whitish, 
with four short fuscous streaks, the last of which is also continued 
through the cilia of the hinder margin; there is a dark fuscous arch 
round the apical black spot, whence a dark fuscous hook also arises, 
Posterior wings grey, with paler cilia. 
This elegant little species has only hitherto occurred among 
maple, at Whittlebury Forest, in September and October. 
