EXPLANATION OF THE PLATE. 



CaNTHUS, 1, 2, (J, 3, 4 9 , 5 var. ^. 



a Egg. 



b Young Larva; //- heail; /;^ jirocess on verte.x; h^ section of siile, segments 7 and 8 ; all masnified. 

 b* showing the tubercles and processes. 



c Larva at 1st moult ; c^ head ; c' side of 7 and S ; all matrnified. 

 d Larva at 2d moult; rf- head ; d' side of 7. 



(' Larva at 3d moult ; e.'' head ; e dorsal view of 7 : e* last segment; all magnified. 

 f Larva at 4th moult; /'' head ; _/"' dorsal view <if 7 ; all magnified: /'■' larva natural size, near the end 



of the stage. 

 g Mature Larva, natural size ; g- he.ad ; g^ side of 7 and 8 ; g^ dorsal view of 7; the last three. figures 



magnified. 

 h, h^ Chrysalls, somewhat enlarged. 



