I.VONETIA. 283 



entirely wanting. Wing narrow, tlie anterior often caudiilate, tlie pos- 

 terior lanceolate. 



The insects of this family arc mostly ratlier sluggish; Bmru- 

 latrix shows more activity than aiiy of the other gcmera. They 

 may frequently be observed at rest on palings, trunks of trees, 

 etc., and when disturbed generally content themselves with a 

 single sudden movement to a fresh place of rest ; even when on 

 the wing their movements are slow. The larvrc, as far as known, 

 are all miners ; but in Buccn/afrix it is only the young larva that 

 mines. The larvsc, when full-l'ed, (piit the mine (excepting in P/i/ji- 

 locnisl'iH), and form a silken cocoon, at some convenient place. 



This family comprises oidy five genera, which may be arranged 

 thus : — 



a. Anteunpc as long as the anterior whigs. 1. Lyoxetia. 

 a a. Antenna? shorter tlian the anterior wings. 



h. Head qnitc smooth. 



c. Labial palpi illiform. 2. PnYLLOCNisTis. 

 c c. Labial i)alpi none. 3. Cemiostoma. 



b b. Head with a tuft on the crown. 



d. Labial palpi iiliform. k Opostega. 



d d. Labial palpi none. 5. Blcculatrix. 



Cxenus L LYONETIA. ^J^ ^ 



r.-C_ 



Lyonetia, Hiib. V. 423 (1816); ZcU. L. E. iii. Argyromujc'^ ))., 

 Curt. ; Step. ? Fdachisla p., Treit. ; Dup. L. V. xi. LyonclUt p., 

 Zell. Isis, 1839 ; Dup. Cat. 

 Capilli squamacei, appressi, occi])itaIes tenucs suberccti. Antcmiai 

 alarum lomjitudlne, tenucs, conehula basali mcdiocri. Palpi labiales 

 breves, penduli. Abe angust.T, anteriores candnUp, postcriorcs se- 

 tace;e ; anteriores : cellula discoidalis elongata, tenuis, acuminata, 

 posticc quinque ramos einiitit, vena subdorsalis in basi f areata ; . 



posteriores : vena; subcostaHs ac niediana ^f,^ c\\\\\ niarginibus <lri^<ydLl 

 coalcscentes. 



Head smooth, with appressed scales, at the back with slender slightly 

 erect scales. Antennre «•$ lomj as the anicrior irhigs, slender, with a 

 moderate-sized basal eye-cap. Labial palpi short, drooping. Wings 

 narrow, the anterior cffK(/r/^e, the posterior setaceous. In llic anterior 

 wings the elongate, slender, pointed discoidal cell emits live veins pos- 

 teriorly ; the subdorsal vein h furcate at the base; in ihe ]iosterior 

 wings'the subcostal and median veins speedily become conduent with 

 the margins. 



The insects of this genus have;, from the elongate anterior 

 wings and loiig antenna', some resemblance with the (IracUar'uc ; 

 but their dill'erent position wdien at rest completely destroys the 



