a white colour, the head being reddish-brown. 

 It is somewhat difficult to ascertain the early 

 movements of the larva, in consequence of its 

 small size; but its destructive career certainly 

 commences about the last of September, or early 

 in October, by its entering the tree probably 

 through the tender bark under the surface of 

 the soil ; after having passed through the bark, it 

 proceeds downwards into the root, and finally 

 turns its course towards the surface, where it 

 arrives about the commencement of the suc- 

 ceeding July. 



Having attained to its full growth, the larva 

 enters the pupa state, between the first and the 

 middle of July ; enveloped in its follicle, it may 

 then be readily discovered close to the trunk, 

 surrounded by the gum which oozes from the 

 wound. The pupa state continues from the tenth 

 of July to the latter part of that month, or be- 

 ginning of August. 



Mr. Worth examined his fruit trees on the 

 tenth of July, when he obtained twenty follicles, 

 and about thirty larvae ; of the follicles, four were 

 empty, the insect having assumed the winged 

 state. The larvae had all arrived near the surface 

 of the ground, for the purpose of undergoing 

 their great change. 



PLATE XIX. 



