254 THE CANADIAN ENTOMOLOGIST. 



first received with the opening buds which I had kept in a tin, and they 

 then began to feed eagerly upon these. The arrival of a fresh supply of 

 V. Canadense from Mr. Fletcher removed all cause for anxiety. 



On 25th May both were observed to be apparently fixed for 4th 

 moult. Length as contracted, 14 mm. The spiracular fold is pink, 

 bordered with white and interrupted by the spiracles, which show as a 

 green oval ring on the white band with a white centre. There is no trace 

 of any pink or other stripe above or below the spiracular one. There is 

 a dark green dorsal line, and the space on each side of it has a yellowish- 

 green appearance from the minute yellowish warts, but the subdorsal or 

 lateral region is ot a bluish-green shade, and the warts are whitish. The 

 region above the spiracular fold is tlius about evenly divided between 

 bluish and yellowish green. 



One was found, about 10.45 ^- "^-j o" 26th May, to have passed 

 4th moult, and was described at i p m. 



After 4th moult. — Length at rest, 1 6 mm. Head and second seg- 

 ment bright green, finely sprinkled with black points, from which arise 

 minute hairs, blackish above, whitish below. Dorsal region green, with 

 a brownish-yellow tinge, as before. Lateral and sub-spiracular regions 

 bluish or whitish green, the minute hairs being whitish. Spiracular fold 

 white, overlaid along the middle with coral-red. On following morning 

 the other larva had passed 4th moult, and on 31st the former was appar- 

 ently mature, as it left its food and crawled up to top of cage. I 

 described it in the afternoon, but it was very restless, sometimes crawling 

 very fast, and sometimes in a very funny, jerky manner. 



Mature larva. — -Length, 25 mm. Rich dark yellowish-green on head 

 and above, with narrow dorsal dark stripe bluish-green on sides, with innum- 

 erable small papillJB and minute hairs of a dark brown or black colour 

 above, partly white on sides, and white below spiracular fold. Spiracular 

 fold white, with bright crimson stripe included. Head small; as finely 

 dotted as the body. Below bright green ; feet and prolegs the same. 



Mr. Fletcher kindly gave me the following note on the general habits 

 of the larva : 



" Larva decidedly sluggish for the greater part of the time, but when 

 feeding, which was generally twice a day, very nervously active, biting 

 with great rapidity, and moving slowly with short, jerky steps." 



The following particulars are also taken from Mr. Fletcher's notes on 

 the mature larva : 



