12 HAUSTELLATA. — LEPIDOPTERA. 



Ph. Bo. bucephala. Linne.—Don. i. pi. S, $ .— Py. bucephala. Steph. Catal. 

 No. 5952. 



Anterior wings of a rich clouded silvery ash, with a faint black transverse striga 

 at the base, then a duplex one, anteriorly ferruginous, posteriorly black, and 

 towards the apex a third, also duplex, somewhat flexuous and interrupted, 

 anteriorly black, and posteriorly ferruginous ; between wliich and the apex is 

 a large rounded yeUow patch, a Uttle clouded with ochraceous or luteous ; 

 the hinder margin with lunular ferruginous spots ; the cilia flavescent, spotted 

 with ferruginous : posterior wings whitish, shghtly suffused with dusky on 

 the disc, with a few obscm-e ferruginous spots on the ciha : head and thorax 

 anteriorly yellow, surrounded by a double dusky-ferruginous striga ; the sides 

 and posterior margin of the thorax hoary-cinereous : abdomen pale-yeUow, 

 with row of dusky-spots on each side. 



Caterpillar pilose, tawny yeUow, each segment with elongate black spots placed 

 longitudinally, and interrupted at the joints, forming a series of interrupted 

 parallel black streaks ; head black ; legs outwardly black, inwardly luteous : 

 it feeds on the lime, oak, willow, alder, elm, and chestnut : is full grown in 

 September, when it changes beneath the ground to a brown pupa with two 

 spines at the apex. 



Very abundant, towards the middle or end of June, throughout 

 the metropolitan district. " Common near Andover." — Rev. G. T. 

 Rudd. " Bottisham and Ely, the larva in some seasons in great 

 profusion on the elm, which they almost strip of its leaves." — Rev. 

 L. Jenyns. 



Genus XXXV. — Clostera, Hqffmansegg. 



Palpi short, porrect, slightly ascending, and pilose, triarticulate, the apical joint 

 minute. Antennw short, cvu-ved, pectinated to the apex in both sexes ; in the 

 males especially ; with a fascicle of scales at the base : head very minute, 

 concealed beneath the thorax, the latter robust, strongly crested, with a central, 

 coloured longitudinal patch : abdomen moderate, the apex suddenly attenuated, 

 with a bifid tuft : wings, anterior elongate, the hinder margin entire, the apex 

 with a more or less discoloured patch ; posterior entire ; tibiw with spurs. 

 Larva shghtly pilose, with a tubercle on the fourth, and another on the anal, 

 segment, posterior legs perfect : prnpa folUculated. 



From Pygsera this genus differs by the brevity of the antennae, 

 which are pectinated in both sexes, and distinctly curved ; by the 

 form of the thoracic crest, and the longitudinal patch thereon ; the 

 deeply inserted, minute head; and by the integrity of the posterior 

 margin of the anterior wings : the larva differs in being very 

 slightly pilose, and in having the fourth and anal segment tuber- 

 culated above. 



