230 ELACIIISTID.E. 



Head dark ocbreous, a pale line on each side behind the eyes. Face 

 whitish. Palpi whitisli, terminal joint pale fnscous. Antennae dark 

 fuscons. Anterior wings dark ockreons, with three slender silvery- 

 white streaks from the base, one along the costa, which is soon de- 

 flected, and ceases before the middle of the wing, another runs above 

 the fold, and the third along the inner margin to the middle; in the 

 middle of the costa is a whitish spot, not sharply defined ; beyond the 

 middle of the wing are five small leaden-silvery spots placed almost in a 

 circle ; beyond them a silvery white streak runs at the apex of the wing 

 through the cilia, separated from the wliitish costal cilia by a narrow 

 fnscous streak ; cilia of the inner margin pale grey. Posterior wings 

 grey, with paler cilia. 



This species, which to my notions is even more elegant than 

 the preceding, occurs in the Cambridgeshire fens in June and 

 July. 



Genus IV. BATRACHEDRA. (K-VH,^' 



(X- 



Gracillaria p., Ilaw. ; Step. Oniix p., Trcit. Cosniopteiyx p., Zell. 



Capilli Isevigati ; frons angustula, obtusa. Antennae corporis longitu- 

 dine, setacea?, articulo basali drevi, reliquis confertis, uudce. Palpi 

 labiales mediocres, recurvi, acuti, articulo secundo compresso, sub- 

 clavato. Haustellum mediocre, squamatum. Tibite posticae parum 

 inerassatiE. Alae longe ciliatae, antcriores angustte, posteriores an- 

 gustissima?, fasclculo costa- 'propu, hasiiu ; antcriores : cellnla discoi- 

 dalis valde elongata vix clausa ; rami apicales attenuati, subobsoleti ; 

 medianae ramus primus brevimmtis, obUqHus ; submediana simplex; 

 subdorsalis simplex, furca basini versus indicata ; posteriores : vena 

 mediana tantum postice distinctior, rctmis nnUis. 

 Head smooth ; the forehead rather narrow, obtuse. Antennct as 

 long as the body, setaceous, the basal joint short, the remainder thickly 

 set together, without hairs. Laljial pal))i moderately long, recurved, 

 acute, the second joint compressed, subclavate. Tongue of moderate 

 length, clothed with scales. The hinder tibi;e slightly thickened. 

 Wings with long ciHa, the anterior narrow, tiie posterior extremely 

 narrow, with a taft projecti)!!/ from the costa near the base. In the an- 

 terior wings the extremely elongate discoichU cell is hardly closed pos- 

 t(n'iorly ; the attenuated apical veins are almost obsolete ; the first 

 branch of the median vein is very short and olAiqne ; the submediau 

 vein is simple ; the subdorsal vein is simple, but there are indications 

 of a fork towards the base. In the posterior wings the median vein is 

 only more distinct posteriorly, tcith no branches. 



Only two sjiecies are at present known in this genus : one, prcc- 

 anf/usla, is very common among willows and poplars in July, and 



