14 LEPIDOPTERA. 



is furtlier oriiaiueated with a lonir blaclc tail, eilj'cd with 

 yellow on one side. There are two yellowish stripes on the 

 black thorax. Under side of the wings with markings as in 

 the upper, but densely suffused with primrose scales, and 

 having dashes of brick-red colour above the dark band of the 

 hind wings. 



Variation is mainly in the width of the submarginal dark 

 bands on the fore and hind wings, in the depth of colour in the 

 nervures, in the presence or absence of a black spot in the 

 second pale space from the apex of the fore wings, and in the 

 degree of red suffusion on the pale lunules of the hind wings. 

 Kentish-captured specimens are of a deeper yellow than those 

 of the Fens, larger in size and with narrower subterminal 

 bands. Some of those from Wicken Fen have these bands 

 extremely broad. Mr. Sydney Webb has a specimen with 

 fore wings broad and somewhat falcate, and in the collection 

 of the late Mr. H. Doubleday, at Bethnal Green Museum, is 

 one in which the dark short streak on the nervure which 

 closes the discal cell of the hind wings is double. 



May to August ; partially double-brooded. 



Larva stout, rounded, slightly tapering to each end. Head 

 smaller than the second segment, which is squared in front, 

 and furnished with an orange-coluured fleshy retractile' 

 tentacle in the form of the letter V, the forks being blunt at 

 the top, but capable of great elongation to a fine point. 

 Colour pale emerald green, incisions black, a broad transverse 

 laterally interrupted black band on each segment. These, 

 from the third to the twelfth segment, each contain six 

 bright orange spots. Head having four black lines and three 

 black spots, anal segment two black spots, each leg and 

 pro-leg one, and a row below the black spiracles. There 

 is also a central row on the pale ventral surface. (Fenn 

 MS.) 



Foon. — Peucedanum palustrc and occasionally ^?(^e^'ifrt syl- 

 vrdris and other UmhcUifcra: in the Fens. When it occurs 

 elsewhere its food is more various and includes the common 



