LYC.-ENID.-E. 51 



time of emer^pncp is very variable, apparently regnlated by tlie 

 lateness of the spring — from June 17th to the first week in 

 July. Reared specimens made their appearance from June 

 13th to 27th. He writes : " It was the greatest possible pleasure 

 to see them walking about the table while I was at breakfast." 

 In 1858 it was found commonly at Kettering, and in 1859 at 

 Oundle, and has been recorded at Warboys Wood, Cambridge- 

 shire, and in Buckinghamshire. One specimen was taken at 

 Brandeston, Suffolk, by the Eev. Joseph Greene ; and Mr. 

 AUis found it commonly in the Overton Woods and about St. 

 Ives. There is also a record in Monmouthshire, which may 

 require confirmation. This butterfly does not appear to be 

 losing ground in this country, its fondness for trees and lofty 

 bushes rendering it difficult of capture. 



4. T. quercus, L. — Expanse, l\ to 1^; inch. Purple-black. 

 Female with a large brilliant purple patch in the fore wings. 



Purplish-black. Male with a rich bluish tinge, female 

 having a brilliant purple-blue blotch on the fore wings, from 

 the base and on the dorsal margin, to the middle. This is 

 divided by the dark median nervure. Tail short. Under 

 side ashy-grey ; fore wings with a faint perpendicular central 

 spot, followed by a perpendicular white bar, edged internally 

 with brown ; beyond this is a faint stripe of smoky grey and 

 yellowish, parallel with the hind margin ; hind wings having, 

 beyond the middle, an indented and angulated white stripe 

 edged internally with brown; hind margin rippled with silvery 

 and having two orange spots near the anal angle. 



Not generally variable, but liable occasionally to singular 

 aberrations. Mr. F. Norgate has a male, taken by himself in 

 Norfolk, in which a roughly wedge-shaped orange spot lies 

 just beyond the discal cell of the fore wings on the upper 

 side; Mr. Herbert Goss, a female taken in the New 

 Forest, in which the usually purple blotch of the fore wings 

 is of a brilliant blue ; while Mr. S. Webb possesses a male 

 having dashes of blue on the costal margin from the middle 



