24 PLATE CCCCIL 



Linnaeus defcribes the male as a variety of the female. The male 

 infecl, which we have reprefented, is of a beautiful filky greenifh 

 colour, gloffed with a braffy luftre, the antennae clavated and brown : 

 legs yellow, except at the bafe of the thighs, which are black, and 

 the five laft joints of the abdomen marked in the center with a broad 

 ftripe of dark, or velvetty black. The female has the colours through- 

 out more obfcure, the antennae are duiky, approaching black ; the 

 thorax dark, and the abdomen braffy, but tinged with a fombrous 

 hue inftead of green, and the wings are rather darker than in the 

 male. 



This elegant fpecies is inferted among our Britim Infecls upon the 

 authority of two fpecimens, which we are credibly informed were 

 found in England. Fabricius defcribes it as the offspring of a fhort 

 green-coloured larva, which is marked with two yellow lines, and has 

 a cinereous head, with a recldiih brown band. It feeds on the 

 alder. 



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