16 PLATE CXIV. 



The Caterpillar of the Goat Moth feeds on the internal fubftance 

 of willow trees ; it is faid to be alfo found in the body of the oak, but 

 we have never difcovered any in fuch a fituatiom The eggs are -laid 

 in the crevices of the trees ; as foon as the Caterpillars are hatched, 

 they begin to pierce into the folid wood. In moft parts of England 

 they are called Auger Worms ; the holes which they make in the 

 timber appearing as if bored with that Inftrument. 



It lives in the Caterpillar ftate three years before it is transformed 

 to a pupa ; when full fed it is four inches long, the body appears 

 very flefhy, and without hairs ; the head is black, and armed with very 

 fharp forceps ; the cafe is compofed of bits of wood and faw-duft 

 which it unites with a ftrong web ; the infide is lined with a fine 

 .finooth white filmy fubftance, like fattin ; it pafTes to the pupa ftate in 

 the cavity which it has perforated in the caterpillar ftate, within three 

 or four inches of the opening : it remains only two months in that 

 ftate before the Fly is produced. 



Is found in chryfalis in May ; in the fly ftate, the latter end of June, 

 ©r in July. 



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