THE CANADIAN ENTOMOLOGIST. 249 



the lower front, where it is reddish-black. Whole surface granulated and 

 much covered with simple tubercles, roundly conical, and of irregular 

 sizes ; around the top and down the sides at back of head a row of sharp 

 and pretty long spurs ; all these red, as are nearly all in front, but a few 

 are black both on front and sides ; on each vertex a stout black process, 

 short, the top rounded, and at base of the arch are six little rounded 

 elevations ; behind this process rises one of the spurs of the back head, 

 overtopping it by .or inch. 



One day later, or 30 hours after the 4th moult, all the dark parts 

 became paler, the red more brown, the face and head paler ; the crests 

 of all the dorsal tubercles and those on sides quite white. 



Still one day later, the red parts were changing to olive-brown, and 

 the red beads had become blue. The next day the dark parts were entirely 

 green, mottled light and dark, the dark being olivaceous. The processes 

 on 3 had not at all changed color from the first. 



Five days after 4th moult, the larva suspended, having reached a 

 length of one inch, and two days later pupated. 



Chrysalis — Length 1.1 inch; head case sub-pyramidal ; the vertices 

 have each a low elevation, triangular ; mesonotum high, rounded, with a 

 thin low carina which rises to a blunt apex, sloping either way about 

 equally ; wing cases much elevated above the surface on the dorsal and 

 posterior sides, the middle being incurved ; on middle of dorsum rises a 

 process, broad at base but rapidly narrowing to a sharp edge, rounded at 

 top, not quite circular, the anterior part having a more rapid curve than 

 the other ; the space between the base of this and the wing cases cor- 

 rugated ; abdomen sub-cylindrical, a little compressed laterally, rising to 

 a low medio-dorsal ridge ; color of anterior parts, head and mesonotum 

 brown ; the dorsal side of head case imperfectly silvered ; wing cases 

 deeper brown, the raised ridges blackish ; the dorsal process same color 

 as the wings ; at base on either side is an oblique black bar which crosses 

 three segments, and the space between these and the wing cases is silvered 

 on a whitish ground ; abdomen buff, mottled with gray-green or olive- 

 green, on ventral side covering quite uniformly, but on the rest the dark 

 shades are faint and do not much discolor the light ; the last segments 

 dark, like head. Duration of this stage 8 days. Two of the larvae reached 

 maturity and gave two female butterflies. 



