132 THE CANADIAN ENTOMOLOGIST. 



middle of the body incline to yellow. The brown and pale brown mot- 

 tlings of the head, though irregular, seem to follow in a measure the stripes 

 of the body in arrangement. Pro-legs concolorous with the body, thoracic 

 paler. Venter dull white, black in the middle of the joints. Hairs 

 black. Duration of this period, 3 days. 



After 4th Moult. — Length 1.05 inches. Marked and colored very 

 much as during the preceding period. Piliferous spots less prominent, 

 except the posterior pair of joint 4. Each one of these contains a white 

 dot with a similar dot in its front. Joint 1 1 a little raised with the pos- 

 terior pair of spots tubercular. Duration of this period 3 days. 



After 5th Moult. — Length 1.35 inches. The plan of marking of the 

 insect has not changed, but the colors are so modified that the caterpillar 

 has a yellowish brown appearance with a decided chrome yellow tint at 

 the intersection of joints 4 and 5. The piliferous spots are black, but 

 from joint 4 back each is accompanied by a small white spot. In general 

 the piliferous spots have grown less prominent, the posterior on joint 4 

 about the same, those on joint 1 1 a little more elevated. The dorsal 

 stripe is a little irregular in outline at the intersection of the joints, con- 

 sisting of one or more expansions and contractions. The difference in 

 color of the stripes seems to be due to the difference in shade of the brown 

 dots of which the stripes are composed, the yellowish green ground color 

 being about the same. Venter about the shade of the pale stripes, the 

 middle of each joint being brownish black tinged with wine color, these 

 spots being connected. 



Mature Larva. — Length 1.45 inches. Width of head .12 inch, of 

 middle of body .18. Head flat, sloping ; ocelli 6 ; in shape and number 

 of ocelli resembling larvae ot Catocalae. Marked very much as at the 

 beginning of this period, three stripes on the dorsum and three on each 

 side, alternating light and dark, but these are less distinct, approaching a 

 uniform brownish drab ; the white spots also less distinct. The first and 

 second pro-legs are about half the length of the others. Venter a little 

 paler than above, with an elliptical reddish brown spot in the centre of 

 each joint. Legs and palpi concolorous with the body, jaws dark brown. 

 Duration of this period 13 days. 



Chrysalis. — Length .80 inch, depth of thorax .25 inch ; basal abdom- 

 inal depression very slight. Depth of 4th abdominal joint .27 inch, from 

 this gradually tapering to the end ; the wing cases covering five joints in 

 front, the legs and antennae cases extending the same distance as the 



