98 PEABL-BOBDEBED FBITILLABY. 



forming the margin, the brown of the wings appearing between the 

 circles. The hind wings are marked in a very similar manner, but 

 the billets are much run together. Their base is also dusky black. 



Underneath, the fore wings exhibit all the markings from the upper 

 side, the tips being lighter, and bordered some way within with dark 

 reddish j orange. The hind wings have one large silver spot on their 

 centre, placed diagonally across the central pale bar, and a row of 

 silver crescents runs round the edge of the wing, followed by a reddish 

 line, itself margined by a streak of greenish straw-colour, the outside 

 margin. These wings are very beautifully marked with reddish ferru- 

 ginous, buff, and greenish straw-colour, in the way of waved bars, 

 formed by a wide band of the former mottled with the latter, this by 

 one of the greenish straw-colour, and this by one of the latter, the 

 base being also of the greenish straw-colour ; the central pale bar has 

 one. 



The caterpillar is black in colour and spined, with two rows of 

 orange dots on the back. 



Several varieties of this species have been recorded. — The Rev. C. J. 

 Bird, Vicar of Gainsborough, possesses one which is nearly white. Mr. 

 Stephens recorded one in which the silvery marginal spots are wanting, 

 and another with the inner half of all the upper surface of the wings 

 black, spotted with fulvous, with large black spots on the under side 

 of the fore wings. Mr. Westwood also figures one in which all the 

 black markings on the upper side of the fore wings are suffused, except 

 the row of round spots within the margin, the markings on the hind 

 wings being somewhat more distinct, and the under side scarcely different 

 from the ordinary appearance. The autumnal Irood is of a much 

 yellower ground-colour than the spring one. 



The figures are from specimens in my own collection. 



