I'LATYPI'KRICID.E. DREPANA. 5 



Anterior wings ochry-griseous, thickly hut irregularly marked with minute 

 transverse obscure streaks, with two oblique dusky lines, having a dark spot 

 between them near the costa, the basal line nearly straight, the posterior 

 one more or less waved towards the costa ; the wing from the latter to the 

 hinder margin is rather darker than the base, and has in general a more or 

 Jess distinct pale waved streak ; the margin itself is brown, with darker 

 cilia, intermixed with white : posterior wings paler, generally with an 

 obscure streak towards the middle on the inner edge, and a faint central 

 dusky dot ; the hinder margin darker, with fuscous cilia. 



The oblique strigse on the anterior wings are sometimes nearly approximating, 

 and at others widely apart. 



Caterpillar brown with darker spots : it feeds on the birch during the autumn, 

 changes to a pale ashy-brown pupa, and appears in the perfect state in the 

 following May. 



Not very uncommon in the woods in the vicinity of London, espe- 

 cially at Coombe and Darenth, where birch is abundant ; it also 

 occurs in other parts of the country. "Durdar." — T. C. Heyshnm^ 

 Esq. "York."— IF. C. Hewitson, Esq. " Meldon Park."— 

 G. Wailes, Esq. 



Sp. 2. cultraria. Alls anticis ochraceis, itrigis duahus parallellis fusco-Jerrugi- 

 neis, punctoque interjecto fuxco: posticis albidis, immaculatis. (Exp. Alar. 

 1 unc. 2 — 5 lin.) 



PI. cultraria. ieacA.— PI. cultraria. Steph. Catal. pi. n. p. 156. No. 6750. 



Anterior wings pale ochre, sometimes with a griseous cast; with two rather 

 distinct strong parallel rusty-brown oblique Hues, having a brown spot 

 between them near the costa ; hinder margin umber-brown ; fringe brown 

 and white intermixed : posterior wings whitish, spotless. 



This species has occurred occasionally within the metropolitan 

 district, but it appears to be in plenty at Monk's Wood, Hunts, 

 which induces me to consider it distinct: the hinder margin of the 

 anterior wings appears to be less deeply notched than in PI. Lacer- 

 tula, and the general habit of the insect is different. 



Genus CCXLI\ . — Dkkpana, Laspeyres. 



Palpi minute, conic, remote, scarcely projecthig beyond the scales of the 

 head : maxilla; very short. Antennw in the males rather deeply bipectinated 

 nearly to the apex, the pectinations ciliated ; in the females simply ciliated 

 or faintly bipectinated, the pectinations, as in the males, decreasing in 

 length towards the apox : head rather broad, with compact pilose scales 



