ENTOMOLOGICAL NEWS. 105 



but do not, as a rule, eat upon the edge of the leaf until they 

 are short of food. 



Stage IV. Much as in stage three, except that the dorsal 

 line is yellow instead of drab. Growth very slow. Length 

 eleven or twelve mm. Duration of this stage not accurately 

 observed, but probably two to three weeks. In nature some 

 hibernate in this stage and some in the following stage. 



Stage V. Coloring and markings as before. Growth slow. 

 Duration of this stage very variable. 



Stage VI. Head shining black with a few scattered hairs 

 also black. Clypeus brown, palpi yellow at base, brown at 

 tip. Body deep black. A dorsal yellow stripe about one- 

 tenth the width of body. Edges finely but irregularly in- 

 dented with black ; usually cut transversely on middle of each 

 segment by black. Color of line sometimes deepening to orange 

 on the middle of the segments. Traces of a subdorsal whitish 

 line consisting of broken and irregular series of spots on the 

 black ground color. A conspicuous lateral yellow stripe above 

 the spiracles, a little wider than the dorsal line, consisting 

 really of a series of irregular linear spots with their length at 

 right angles to the direction of the stripe. This stripe con- 

 nects below by dots and lines with a substigmatal line, nar- 

 rower and paler than the upper one, and like it creased with 

 lines of the ground color. Traces of a subventral yellow line 

 on the bases of the legs. Leg plates black. Ventral surface 

 pale gray with a few minute dark dots. Tubercles polished 

 black, those above the spiracles having blue reflections, each 

 giving rise to about twenty radiating stiff short hairs, which 

 are black above the spiracles and whitish below. Length 

 when full fed 28 to 32 mm. 



Pupa Hon. When about to pupate the larva seeks the ground 

 and makes a sort of cell on the surface, underneath the loose 

 debris, which it lines with very cobweb-like silk, making a 

 loose thin cocoon to which small rubbish adheres. The co- 

 coons are often so flimsy as to fall apart of their own weight 

 when lifted. Larval skin is not extruded from the cocoon. 



Pupa is shining black 12 to 17 mm. in length, with a thick 

 shell admitting of link- or no motion in the abdominal segments. 



