382 European Butterflies and Moths. 



lines on the back and a pale stripe on the sides, spotted with yellowish-red. It feeds on willow, 

 alder, and bilberry, in May and June. 



O. — Forc-ivitii^s generally with dusky markings; the central area not darker, or only slightly so, 

 generally intersected with darker, and often indistinct, lines, and zuith rounded projections behind, 

 unicolorous with the basal area, and bounded by tzvo light and evenly-divided transverse bands, but 

 the first is often very suffused a7id scarcely paler ; the subterininal liiie consists of evenly-rounded curves, 

 open toivards the base, and often indistinct, not darkened in cells 4 and 5, or only slightly so ; hind- 

 wings pale grey, generally with the indistinct continuation of the second double band and the subterniinal 

 line, and the hind margin almost ahvays marked zuith dark double dots. The antenna; of the males 

 are simply ciliated, or shortly pectinated. The structure of the hind-ivings differs in different species. 

 In L. Aduinbraria and Frustata the discocellular ncrvnle is simply arched, and nervule 5 rises 

 from its upper half In most of the other species the discocellular is curved into an S-sliape, and 

 iieii'ule 5 rises from the loiver projecting part, nearer nervule 4 tluDi nervule 6, and rarely in the 

 middle between them. 



*70. L. Didymata (Linn.). — Fore-wings brownish-grey in the male, and pale grey in the 

 female, varied with brownish, the central area bordered by distinct pale double stripes, with 

 slight projections below the middle, and the subterniinal line filled up with dark grey in cells 

 4 and 5 ; hind-wings pale grey, darker on the hind margin, with a double light suffused 

 central band, and the antennae of the male pectinated. Expands about i inch. Common in 

 Northern and Central Europe in June and July. The larva is grey, with white lines on the 

 back and sides ; it feeds on bilberry and chervil in May and June. 



*7i. L. Alultistrigaria (Haw.). — Fore-wings yellowish-grey, with light nervures dotted 

 with black ; the subterniinal line scarcely filled up with darker in cells 4 and 5 ; hind-wings 

 pale grey, and the antennje of the male pectinated. Expands from i to ij inches. Inhabits 

 Western Europe in March and April. The larva is yellowish-white, with double lines on the 

 back, and a black head. It feeds on bedstraw in May and June. 



72. L. Aqttceata (Hiibn.). — Fore-wings smooth, shining, pale yellowish or yellowish-green, 

 the double stripes whitish, the first indistinct, and the central area with two strong projections 

 in the middle and one below the costa ; hind-wings rather dark grey, and the antenna; of the 

 male pectinated. E.xpands about \\ inches. It is found in the Alps and the mountains 

 of Southern Germany in July and September. 



Tl. L. Nobiliaria (Herr.-Schafif.). — Fore-wings smooth, shining, bluish-grey, the double 

 stripes paler grey and very broad, the first often indistinct, the central area paler on the costa 

 in the middle, and with no central dot ; slightly curved, and regularly dentated behind, with 

 no stronger projections ; the subterminal line shaded with darker in front, and the hind margin 

 without markings ; hind-wings equally long on the costa and inner margin, with a light and 

 simply-curved transverse stripe ; the antennoe of the male simple. Expands about i \ inches. 

 Inhabits the Alps and the German and Norwegian mountains in July. (Z. Vallesiaria, Lah., from 

 Switzerland, is smaller than Ccesiata ; the ground-colour is greyish fulvous, and the central 

 band and hind margin are dull brownish-red ; the subterminal line is very indistinct, but the 

 marginal row of double dashes forms a slender waved brown line ; antennse simple.) 



74. L. Austriacaria (Herr.-Schiiff.).- — Fore-wings faintly shining, brownish-grey, the double 

 stripes paler grey, broad and distinct ; the central area paler on the costa in the middle, 

 banded with darker on the sides, and intersected by one dull dark line in front, and behind 

 by two ; a black central dot and a triple projection in the middle ; the subterminal line 

 shaded with darker in front, and the hind margin long, and marked with double black dots ; 



