ascertained to be inhabitants of Great Britain ; the unique speci- 

 men figured, which is a female, was taken in the month of July 

 at Windsor several years since by Mr. Griesbach, and presented 

 to the British Museum by Dr. Leach. 



The larvae of this Genus greatly resemble those of the Lepidop- 

 tera, except that they have twenty-two feet ; they have also two 

 lateral apertures from which they are able to spirt a fluid, for what 

 purpose we can only conjecture, probably it may be sufficiently 

 fetid or noxious to protect them against the attacks of the destruc- 

 tive Ichneumonida. When the larvae are full grown, they form 

 for themselves an oblong hard case, which is generally attached 

 to a twig or small branch of the tree they fed upon, within which 

 they change to an incomplete pupa. 



The plant figured is Holcus mollis (Creeping Soft Grass) . 



