42 THE CANADIAN ENTOMOLOGIST. 



is bright yellow, reaching to the line containing the outer row of dorsal 

 piliferous spots; below this line to the line below the subdorsal, pale 

 whitish ; below this the color is yellow. Duration of this period, 4 days. 



After Fourth Moult. — Length .55 of an inch. The plan of color and 

 markings unchanged save that the subdorsal color is grayish white, the 

 elevations on joints 5 and 12 more prominent, and in same the dorsal 

 yellow brighter. 



After Fifth Moult. — Length i inch. Similar to the preceding stage, 

 but varying a little in color. Dorsum clear yellow with three dark reddish 

 purple stripes ; below this graj'ish yellow, the two broadest of the three 

 lines mottled, the upper one the most ; below this, including the stigmatal 

 line and the substigmatal space, reddish yellow ; the stigmatal line red, 

 much broken ; venter concolorous with the substigmatal space. Thoracic 

 feet, head and two spots on the neck jet black ; joints 5 and 1 2 have each 

 two prominent velvety black papillae ; a white hair from each piliferous 

 spot, and in addition to this a fine short white pubescence covers the 

 whole body, but not so thickly as to obscure the color. 



Mature Larva. — Length from i.io to 1.20 inches ; width of head .15 

 of an inch, of body .20. Dorsum lemon yellow with three purplish black 

 stripes arranged as in preceding stages. Just above the stigmata is a 

 narrow yellow line ; between this and the yellow of the dorsum the ground 

 color is gray, in some examples tinged with yellow on segments 2 to 5, in 

 others it is a paler yellow ; in the centre of this space is a purplish black 

 line, and on both borders or edges of the space is a mottled stripe of the 

 same hue. The stigmatal, substigmatal and ventral spaces, with the pro- 

 legs, somewhat carneous, the slight fleshy ridge below the stigmata being 

 most so. In the upper part of the stigmatal space is a mottled line, the 

 stigmata black. Head, thoracic feet and spots as at the first of the 

 period. In some examples the stripes are more of a dark purplish red 

 than black. Duration of this period from 4 to 7 days. 



Chrysalis. — Length .55 of an inch ; cylindrical ; depth through thorax 

 and the first abdominal segment .18 of an inch; through joint 3, .20; joint 

 4, .21; joint 5, .2[ j from here tapering gradually to the end, which is 

 rounded, smooth, ending in a stylus with a hook at the end on each side. 

 Surface smooth, shining, a few punctures between the joints, and the upper 

 part of head and thorax a little roughened. Color dark chestnut brown, 

 the eyes and a little shading at the end of the wing cases darker. Wing 



