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230 ELACHISTID &. 
Head dark ochreous, a pale line on each side behind the eyes. Face 
whitish. Palpi whitish, terminal joint pale fuscous. Antenne dark 
fuscous. Anterior wings dark ochreous, 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 whitish costal cilia by a narrow 
fuscous 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. 
Gracillaria p., Haw.; Step. Ornix p., Treit. Cosmopteryx p., Zell. 
Capilli levigati; frons angustula, obtusa. Antenne corporis longitu- 
dine, setacez, articulo basali devi, reliquis confertis, nude. Palpi 
labiales mediocres, recurvi, acuti, articulo secundo compresso, sub- 
clavato. Haustellum mediocre, squamatum. ibis posticee parum 
incrassatee. Ale longe ciliate, anteriores anguste, posteriores an- 
gustissime, fasciculo coste prope basim; anteriores: cellula discoi- 
dalis valde elongata vix clausa; rami apicales attenuati, subobsoleti ; 
median ramus primus drevissimus, obliguus ; submediana simplex ; 
subdorsalis simplex, furca basim versus indicata; posteriores: vena 
mediana tantum postice distinctior, ramis nullis. 
Head smooth; the forehead rather narrow, obtuse. Antenne as 
long as the body, setaceous, the basal joint short, the remainder thickly 
set together, without hairs. Labial palpi moderately long, recurved, 
acute, the second joint compressed, subclayate. Tongue of moderate 
length, clothed with scales. The hinder tibie slightly thickened. 
Wings with long cilia, the anterior narrow, the posterior extremely 
narrow, with a tuft projecting from the costa near the base. In the an- 
terior wings the extremely elongate discoidal cell is hardly closed pos- 
teriorly ; the attenuated apical veins are almost obsolete; the first 
branch of the median vein is very short and oblique; the submedian 
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, zwith no branches. 
Only two species are at present known in this genus: one, pre- 
angusta, is very common among willows and poplars in July, and 
