(Pf.¥T 



U'- 



203 gracilakiid.t:. 



of moderate length, naked. Maxillary palpi rather long, filiform. La- 

 bial palpi slender, ascending, the second johd beneath with a tuft of hairs, 

 the terminal joint slender, pointed. Wings with long cilia, the anterior 

 elongate, the posterior lanceolate. In the anterior wings the subcostal 

 vein is interrupted towards the base ; the discoidal cell is obtuse, and 

 emits nine veins posteriorly (in C. Broiujniardetlmn the discoidal cell is 

 acute, and emits eight veins posteriorly) ; the subdorsal vein is simple ; 

 in the posterior wings the apical vein terminates above the apex, below 

 it is a furcate vein; the median vein is trifid. 



The species of this genus, three in number, resemble tlie Gra- 

 cilarlcc in haljits. Tlic larvre mine or roll up leaves. 



The genus may be thus subdivided : — 

 n. With a hook in the cilia of the anterior wings. Species 1. 

 a a. With no hook in the cilia of the anterior wings. Species 2, 3. 



1. Brongmiardellum, Fab. E. S. Sup. 49G. S3 (1798).— 5»S- 

 stri(/(i, Haw. ; Step. — Curtisella, Dup. L. F. xi. pi. 309. f. 4. — qiierce- 

 tellnin, Zell. Alls anticis griseo-brunneis, strigulis quatuor obliquis 

 cost;ie albidis, introrsum fusco-marginatis, prima cum strigula dorsi in 

 fasciam angulatam connexa, strigula altera albida in medio dorsi, squa- 

 mis albidis fuscisque ad angulum analem; ciliis cvplcis in caudidam ni- 

 (jram productis. Exp. al. 4^ lin. 



Head greyish-brown. Face grey. Palpi whitish ; terminal joint 

 fuscous. Antennae dark fuscous, annulated with whitish. Anterior 

 wings greyish-brown, with four oblique whitish streaks from the costa, 

 margined towards tlie base with dark fuscous ; the first not far from 

 th(^ base of the wing meets a short whitish streak from the inner mar- 

 gin, forming with it an angulated j'ascia ; on the middle of the inner 

 margin is another short whitish streak, dark-margined towards its apex ; 

 at the anal angle are a few whitish scales, followed by some fuscous 

 scales ; cilia of the hinder margin whitish, with a dark line externally, 

 and a htack hook from the apex ; cilia of the inner margin grey. Pos- 

 terior wings fuscous, with grey cilia. 



Not uncommon in many places among oaks, in April, June, 

 August, and September. The larva feeds in May and the begin- 

 ning of August; it mines the leaves of the oak (according to 

 lleaumur), mining when young, several in one leaf, in galleries, 

 afterwards forming a common blotch of considerable size. 



2. cuculipennellum, Iliib. Larvic, iii. ; Trcit. ; Evers. ; Iliib. 

 Tin. Y.n'^—cineren, Haw.; Step.— fl/r///rM«, Dup. L. F. xi. pi. 308. 

 f. 1 ; Zell. L. E. ii. — Liijustrinettn, Zell. Isis, 1S3S, 1839. Alls anticis 

 (tIljidisfusco-mixtis,fasciist)'ibus otjliqnis, \nhna propc basim interrnpta, 

 seeunda ante, tertia pone medium plieam tangeute, niaeulis([ue postieis 

 satiouite fnscis. Exp. al. lin. 



Head pak' grey, nuxed with fuscous. Face whitish. l\ilpi whitish ; 

 termliud joint dark fuscous. Anterior wings licde (jrey, or whitish. 



