GEOMETRID^. CABERA. 195 



Larva with 10 legs, elongate, slightly attenuated in front; head deeply emar- 

 ginate, the eighth segment with two and the tenth with one tuhercle : pupa 

 foUiculated. 



From the foregoing genera the present may be instantly known 

 by the broad hatchet-shaped fascia which adorns the anterior wings, 

 the ground colour of which is pale testaceous or rusty-red, with 

 minute darker freckles : there is also considerable diversity in the 

 structure of the palpi, and in the form of the pectinations of the 

 antennae ; and the larva has the head distinctly emarginated, and 

 has several tubercles on the hinder segments. 



Sp. 1. pulveraria. Alis omnibus testaceo-pulverulentis,fascid medio anticarum 

 dolabriformi brunneo-rufd, aut ferrugined. (Exp. alar. 1 unc. 2 — 7 lin.) 



Ph. Ge. pulveraria. Linne. — ^Azinephora pulveraria. Steph. Catal. part ii. 

 p. 126. Ah. 6513. Albin, pi. xcvi./. d—f. 



Pale testaceous or rufescent ; wings thickly dusted with a darker tint ; the an- 

 terior with a broad hatchet-shaped reddish-brown or ferruginous fascia in the 

 middle, its anterior margin being nearly straight and its outer lobate towards 

 the costa, the lobe frequently emarginate : posterior wings with a more or less 

 distinct fascia within, rather behind the middle : cilia more or less rufescent. 



The colour of the fascia varies exceedingly, and also its width: in some examples 

 it occupies nearly one-third of the surface, while in others it becomes so much 

 attenuated in the middle as to be interrupted : others again have the fascia 

 solid, while some have the centre paler than the sides : the ground colour of 

 the wing also varies considerably ; in some specimens it is slightly tinted with 

 olivaceous. 



Caterpillar reddish-brown, with brighter streaks on each segment : — it feeds on 

 the black- thorn and willow, and the imago appears towards the beginning of 

 June. 



Not very abundant ; but found in all the woods in the vicinity 

 of the metropolis, and in several other places. " Epping." — Mr. 

 Dotibleday. " Rose Castle, Cumberland." — T. C. Heysham^ Esq. 

 " Meldon Park, April and June."— G. Wailes, Esq. 



Genus CXC. — Cabera, Ochsenheimer. 



Palpi very short, scarcely projecting beyond the forehead, slender, slightly squa- 

 mous; triarticulate, the basal joint coarctate at the base, thickened at the 

 apex, curved ; second rather shorter, elongate-ovate, terminal minute ovate . 

 mamllcB rather long. Antennw of the males pectinated ; each joint, excepting 

 about nine at the apex, producing an elongate, subclavate, ciliated twig j of the 



