226 HAUSTELLATA. — LEPIDOPTERA. 



brown fascia clouded with black, and produced on its hinder margin into two 

 sharp angles, the one towards the costa most prominent j behind this a rather 

 broad white fascia, with very much undulated fuscous strigse, and the outer 

 margin greenish, with a waved white striga : cilia greenish, with some fuscous 

 spots : posterior wings cinerascent, with undulated darker and Ughter strigae ; 

 on the hinder margin of all the wings is an interrupted slender black line. 

 Slightly variable in colour, arising from age, the beautiful virescent tinges 

 changing to a pale lutescent. 



Not very abundant ; found in several of the woods within the 

 metropolitan district, particularly at Darenth and its vicinity- 

 « Weston-on-the-green." — Rev. A. H. Maithezos. " Little Orton." 

 — T. C. Hey sham, Esq. " Epping." — Mr. Douhleday. 



Sp. 11. silaceata. Alis anticis cinereis suhnitidis, fascid basi, alter dque medio, 

 scepe interrupta, utrdque albo-marginatd brunneo-fuscis, strigd posticd ma- 

 culdcjue conicarum alterdque apicisfuscis. (Exp. alar. 1 unc. 2 — 4 lin.) 



Geo. silaceata. Wien. Ferz. — Ha. silaceata. Steph. Catal. part ii. p. 133. No. 

 6566. — Ph. cuneata. Bon. xiv.pL 437. J! 2. 



Anterior wings slightly globose, with a fuscous-brown patch at the base, followed 

 by a whitish striga, in which is a geminated clouded ashy striga ; then a very 

 broad fuscous-brown fascia, trilobed behind, and margined with white ; beyond 

 this the wing is clouded fuscous and whitish, with an irregular series of 

 conical fuscous spots more or less edged with white, and towards the apex of 

 the hinder margin is a conic patch of similar hue ; and from the apex of the 

 wing arises a very much angulated white striga : posterior wings fuscescent at 

 the base, with a darker spot ; the hinder margin paler, with undulated strigae. 



Extremely variable ; in some instances the central fascia on the wings is broken 

 into three, or only partially divided, leaving an insulated spot on the disc : the 

 conical spots on the hinder margin are also sometimes nearly evanescent ; and 

 the ground colour is somewhat ochraceous. 



Caterpillar bright green, with a duller lateral line, and a black dorsal one, with 

 some yellowish green spots beneath ; it feeds on the aspen : — the imago appears 

 towards the end of July or beginning of August. 



Rare near London ; I have taken it in the British Museum 

 garden; but near Dover it appears to be in plenty, where I captured 

 many specimens, varying considerably from each other, in August, 

 1819. "Epping." — Mr. Douhleday. " Meldon-park."— (?. Wailes, 

 Esq. " Weston-on-the-green." — Rev. A. H. Matthews. " Newby 

 Cross."— T.C.He2/sham,Esq. « Marton Lodge."— Eew. G. T.Rudd. 



Sp. 12.. Corylata. Alis atomosis, anticis fusco et rufescente-albo fasciatis, fascid 

 media argute et in^egulariter dentata, et swpe interrupta. (Exp. alar. 1 unc. 

 2— 3 lin.) 



