NOTODONTIDiE. — CERURA. IT 



A comparison of the accompanying figures will readily exhibit the difference be- 

 tween the preceding insect and this, which in the integrity of the central fascia 

 closely resembles the Ce. bicuspis of Fischer, but its colouring is somewhat dis- 

 similar. If it be Fischer's insect, the larva, according to him, is green, with 

 a triangular violaceous dorsal spot, margined with yellowish, on the two first 

 joints, and a dorsal series of triangiilar red spots, margined with yellow, the 

 spots becoming wider towards the tail, on the other joints: — it feeds on the 

 birch. 



I believe my specimen was taken at Coomhe-wood, as I obtained 

 it from a practical collector, who chiefly collected in that locality. 



B. Posterior wings with the second nervure bifid, the fourth trifid. 

 a. Anterior wings with a central transverse fascia. 



Sp. 3. furcula. Alis griseis, anticis basi margineque postico nigro punctatis, 

 fascid transversd subangustd luteo-fuscft, extus JlexuosS , thorace varicgato, an- 

 tice griseo. (Exp. alar. $ 1 unc. 2 — 4 lin. : ? 1 unc. 3 — 6 lin.) 



Ph. Bo. furcula. Linne. — Don. viii. pi. 272? — Ce. furcula. Steph. Catal. 

 2Vo. 5960. 



Anterior wings griseous ; the base rather whitish, with black spots, as in Ce. 

 bicuspis ; followed, as in that insect, by a somewhat similar, though rather 

 broader, cinereous fascia ; beyond which is a dusky-ash patch, containing a 

 black costal and central spot, a dusky luntile pointing inwards towards the 

 centre of the fascia, two dusky undulated strigae, and finally a more distinct 

 blackish striga, with an abbreviated costal band ; the hinder margin cinereous, 

 with a row of black dots : posterior wings griseous, with a central spot, the 

 nervures and an obscure band brownish ; the margin with a row of black spots : 

 thorax variegated with black and orange, with the front griseous. 



This and the two following are distinguished by the slight bifurcation of the 

 second nervure of the posterior wing, and by their inferior size. 



Caterpillar green, with a patch over the head, and posterior appendages rufous ; 

 a broad streak of the same colour on the back, margined with whitish ; and 

 an interrupted lateral line : — it feeds on various species of wiUow, aspen, and 

 poplar : pupa brown. 



Apparently the most frequent of the smaller Ceriirse near Lon- 

 don : at Coombe and Darenth woods in July, Hertford, Ripley, &c. 

 " Epping-forest." — A. Cooper., Esq. " York, scarce." — W. C He'wit- 

 son, Esq. " Coieshill."— iJ^-t-. W. T. Bree. 



Sp. 4. arcuata. Alis griseis, anticis basi margineque postico nigro punctatis, 

 fascia transversd angustd cinered nigro marginatd, strigdque posticd Jlexuosd 

 arcuorum nigrorum, thorace antice cinereo. (Exp. alar. 1 unc. 5 lin.) 



Ce. arcuata mihi. Steph. Catal. No. 5961. 



Wings dusky-ash ; anterior with the base rather white, and spotted, as in Ce 

 furcula ; then a narrow transverse cinereous fascia, deeply bordered with black 

 Haustellata. Vol. II. Lst November, 1828. c 



