62 THE CANADIAN ENTOMOLOGIST. 



After 4th Moult. — Length .6 to .7 inch; two days later reached 

 maturity. 



MATURE LARVA. — Length i inch to i.i ; cylindrical, thickest at 

 2 and 3, and tapering gradually to extremity ; the three anterior segments 

 curved down in a circular bend when at rest ; dorsal surface pale green, 

 the lower part of sides of a soft whitish-green ; each segment creased four 

 or five times, and on the ridges small tubercles, each of which sends out 

 a short white or black hair ; along the basal ridge a whitish stripe, most 

 often immaculate, sometimes with an orange patch on each segment, and 

 occasionally an orange line the whole length ; under side, feet and legs 

 pale green ; head small, sub-globose, very little depressed at top, finely 

 tuberculated, and with a few short fine hairs ; color yellow-green. Two 

 days after the moult the larva suspended, and twelve hours later pupated. 



CHRYSALIS. Length .8 inch; long, slender, the ventral side greatly 

 produced ; head case conical, prolonged to a point, which is a little curved 

 back ; mesonotum low, rounded, followed by a slight depression ; from 

 this to posterior extremity the dorsum is a little convex ; the wing cases 

 cover the ventral prominence, and this is thin, rising to a narrow keel, the 

 sides being a little excavated ; from the summit of the keel the slope is 

 regular to head, but posteriorly there is an abrupt curve down to abdo- 

 men ; a slight ridge upon the side from end to end ; color of dorsum pale 

 green or whitish-green, with a darker medio-dorsal line ; the wing cases 

 and ventral side of abdomen yellow-green ; the side ridges cream-color ; 

 so is the ventral carina, but where this approaches the abdomen it becomes 

 brown and the dark color is dilated into an irregular stripe ; on either side 

 of head case, and also on lower side of same, are small brown patches, 

 and near base of mesonotum at upper end are two pairs of small brown 

 spots, edged posteriorly with white, the posterior pair the larger ; the wing 

 cases with several brown points, part of which are disposed in two rows 

 near to and parallel with the hind margin. 



Some chrysalids are quite largely sprinkled with brown dots and 

 patches over whole anterior part, including wing cases, and the keel is 

 brown. Two chrysalids bred in September, 1880, differed from all the 

 rest in that they were black, or black-brown ; the anterior parts darkest ; 

 one of these had the posterior part of the ventral prominence, beyond the 

 wing cases, dull green ; both had the two pairs of spots above mesonotum 

 white. I thought it probable that these chrysalids were diseased, but 



