4 PLATE CCLIII. 



black, and marked on the fide with a row of femilunar fpot*- In, 

 the winged flate, we find more permanent and charaaerifhc diftinc- 



tions. 



Linnaeus, and after him Fabricius, defcribes three varieties of 

 Phaliena Pavonia, a minor |8 media and y major, The firft is the 

 fpecies found in this country, and in the north of Europe. The 

 exiftence of the fecond was formerly difputed by fome naturalifts; 

 and the laft is fo extremely different, at lead in point of magni- 

 tude, that we may almoft venture to remove it from the two pre- 

 ceding. 



The difference between the male and female of the common 

 Emperor Moth is ftrikingly obvious ; the male is fmaller than the 

 female, and the colours in general darker; the pofterior wings alfo 

 are orange in the male, and not fo in the female; and finally, the 

 two fexes may be determined by the ftru&ure of the antenna: : thofe 

 of the male being nearly oval, and very deeply feathered, or pecti- 

 nated, and thofe of the female being alfo peclinated, but fo {lightly 

 as to appear fetaceous. The Phalaena Pavonia media is a moil ex- 

 traordinary variety, for both the male and female fo perfectly re- 

 ferable the female Emperor Moth, P. P. media, which we have 

 figured, that it may be miftdken for the fame fpecies : the female 

 differs in no refpeft from it; and the male only in the form of 

 the antennae. We have received this remarkable infect from 

 Italy and Germany. It is figured by Efper, PhaL 3. tab. 3 ; and 

 is thus defcribed by Linnaeus and Fabricius, /3 media: " fingularis 

 ob fceminam mari fimilimam." The third, P. Pavonia major, can 

 by no means be confounded with the preceding ; our fpecimen of 

 it is fix inches in breadth, and is alfo very bulky : it is found in the 

 Pays de vaud. Roefel has given a figure of both fexes with the larva 

 and pupa. The winged infea is of a dingy brown, the marks 

 fomewhat fimilar to thofe of the common kind. The larva is large, 

 with the head fmall in proportion. The whole is of a citron green', 



furnifhed 



