THE CANADIAN ENTOMOLOGIST. 249 



shining, clothed with dense tufts of black hairs, mixed with reddish- 

 brown ones on the top of the 5th to the 9th segments. Below greenish- 

 black, feet and prop-legs concolorous and semi-transparent. 



After second moult. — Length, */% to -h inch. Same as before, except 

 that the skin is blacker and there are some rather long tufts or pencils of 

 hair on the hind segments, and there is a patch of foxy hair on the top of 

 the 5th, 6th and 7th segments. Feet black. 



After third moult. — Length, $/% to H inch. Head black, slightly and 

 obtusely bilobed. 



Body black, the warts, 10 or 12 on each segment, are black and 

 shining, and arranged in a transverse row of 10, with two in front of the 

 general line in the middle, thus • • The warts are fur- 

 nished with radiating tufts of bristles, which are either black, foxy-red or 

 yellowish, according to their position. Those on the top of the 5th, 6th and 

 7th segments are' foxy-red, and those on the two lowest lateral rows of 

 warts and the lower hairs of the third row are of a yellowish-brown colour. 

 The rest of the hairs are black, and those towards the anal extremity are 

 rather longer than the others. Feet black, prop-legs dark, with a small 

 wart, with a few short bristles on the outside of each ; segments without 

 prop-legs have small warts underneath. 



Passing 4th moult September 6th. — 



After fourth moult. — Length at rest, j£ inch ; in motion, j£ inch. 

 Colours the same as before, but with more foxy-red, which now extends 

 from the 5th to 9th segments inclusive, and is not confined to the top, but 

 extends down to meet the lighter coloured hairs along the sides, so that 

 the black hairs are confined to the upper part of the 2nd to 4th and 10th 

 to 13th segments, and a few along the sub-dorsal region on the 7th to 9th 

 segments. 



Began spinning up about 14th September. A very slight cocoon is 

 made by drawing together leaves or frass with a few threads, and some 

 of the hairs from the body woven in. In this the caterpillar lies slug- 

 gishly for several days before casting its skin and becoming a pupa. 



Pupa. — Length, J^ to fy£ inch, rounded head and pointed tail, dark 

 brown in colour. 



So slight were the cocoons that nearly all the pupae slipped out of them. 



Though most of the larvae went on to pupation, a few seemed deter- 

 mined to hibernate full grown, and so were placed in a box in an out- 

 house, but did not survive. 



