NOTODONTID^:. CERURA. 19 



wings whitish, with a central lunulated spot, and some dots on the margin 

 fuscous : thorax griseous in front, posteriorly variegated with black and orange. 

 Caterpillar of a fine emerald-green, with the head brown, the back blue, and the 

 retractile filaments red : it feeds on birch and oak. 



Taken occasionally in July at Darentli-wood, and other places 

 near London, but rare. " On Epping-forest." — Mr. Stone. 



Sp. 7. bifida. Plate 15. f. 2. — Alis albidis, anticis bast margineque postico 

 nigro punctatis, fascid transversd cinered nigro mar ginatd, posticis fimbria 

 jkiscd, thorace griseo, nigro Jlavoque transversim striata. (Exp. alar. 1 unc. 

 8 lin.: $ 1 unc. 10—11 lin.) 



Ph. bifida. Brahm.—Ce. bifida. Steph. Catal. No. 5964. 



Larger than the last, of which it may eventually prove to be a variety : wings 

 whitish, the anterior spotted with black at the base, with a broad cinereous 

 fascia, sprinkled with orange, and margined with black, the outer undulated ; 

 beyond this, on a pale cinereous ground, are several undulated dusky or black 

 strigae, and some obscure black spots and marks, one more conspicuous resem- 

 bling the letter x ; the hinder margin is duU hoary, or ashy- white, with an 

 abbreviated costal cinereous fascia, sprinkled with yellow, and a row of black 

 spots on the margin itself: posterior wings whitish, with a central lunular spot 

 and a broad marginal fimbria of a dusky hue ; the margin with a row of 

 minute black dots : thorax griseous, transversely striated with black and pale 

 orange. 



This and the last species have the bifurcation of the nervure on the posterior 

 wings very considerable. 



Found near London; one of my specimens I obtained from Mr. 

 Francillon's collection. " Darentli-wood, and near Limehouse." — ■ 

 Mr. Stone. 



b. Anterior wings without a central Juscia, but marked throughout with dentafed 

 fuscous or dark strigae. 



Sp. 8. vinula. Alis anticis alhis, punctis strigisque fuscis repandis dentatisque, 

 corpore albo nigro maculato. (Exp. alar. $ 2 unc. 6 — 9 lin. : ? 3 unc. 1 — 4 

 lin.) 



Ph. Bo. vinula. LinnS. — Don. iii. pi. 85. — Ce. vinula. Steph. Catal. N'o. 5965. 



Anterior wings white, cinereous in the female; the nervures flavescent; the 

 costa spotted with black ; the base with two or three spots, then two undulated 

 rows of transverse approximating black dots, followed by a narrow waved fus- 

 cous fascia, and another duplex corresponding series of paler dots ; towards the 

 middle is an arcuated black streak, pointing outwards, anterior to which on 

 the costa is an abbreviated dusky fascia, continued in an undulated line to the 

 inner margin : behind the central lunule are two very acutely waved or den- 

 tate transverse strigse, and on the hinder margin a series of longitudinal dusky 

 streaks : posterior wings white, or dusky-ash in the female, with a discoidal 

 lunular spot; the margin more or less spotted with dusky or black : thorax 



C2 



