PLATE LXXXIX. 



47 



old one he fhould have difcarded in the other, are equally and indif- 

 criminately ufed in the feveral editions of both ; we ftill find it in the 

 Aurelian, " Camberwell Beauty" in the other, « Grand Surprife," 

 from which it might be readily inferred, that he meant two diftindfc 

 Infects, were it not for the addition of the Linnaean name Pap. Antiopa* 



In the general defcription of this Infect in the Aurelian, Harris does 

 not fay that it was fcarce at that time (1775), which he certainly 

 would if it had been foj but Berkenhout, in his outlines of Natural 

 Hiftory, (1789) adds, after its fpecinc character, that it is " very rare 

 " in this kingdom." To reconcile thofe accounts, we can only ob- 

 ferve, that no Infect is more uncertain as to the time of its appear- 

 ance ; that though found in abundance in one feafon, it may not be 

 feen in the next, or even for feveral fucceffive years ; it will then ap- 

 pear in fmall or large quantities, for one, two, or more feafons, and 

 again difappear for many years as before. 



The Englifh fpecimens differ from thofe of other countries in the 

 colour of the light exterior border of the wings ; in the former, that 

 part is of a very pale yellow brown, inclining to a dirty white; in the 

 latter, It is of a deep yellow, marked and fpotted with brown. Fabri- 

 cius notices this difference, and fays they are varieties. 



The Caterpillars feed on the Willow, and are generally found on 

 the higheft branches; they call their fein early in July, and pafs to 

 the Chryfalis, as reprefented in the plate. The underfide of the But- 

 terfly is of a black brown, with irregular dark ilreaks ; the yellowifh 

 border is viable on that fide. 



PLATE 



