382 THE CANADIAN ENTOMOLOGIST. 



We were fortunate enough to secure a batch of eggs from a confined 

 female, and the following notes were taken upon the preparatory stages : 



Egg. — Dome-shaped; tapering slightly to the base; diameter, 0,6 mm.; 

 height, 0.4 mm., with about 44 ribs. In confinement the eggs were laid in 

 a large flat patch in close, even, rows of from ten to twenty eggs in a row. 

 Over 700 eggs were laid by a single female. Eggs hatched on July 5 and 6. 



Stage I. — Length 2.5 mm. Body cylindrical, after feeding pale 

 greenish ; skin smooth and shiny. Head 0.3 mm. wide: rounded, deeply 

 emarginate at vertex, shining, blackish-brown. Thoracic shield, piliferous 

 tubercles and anal shield all shiny black. No markings on body. 



Stage II. — Length 5.5 mm. Body pale green. Head 0.6 mm. wide, 

 pale brownish, with darker brown around each hair. Thoracic shield 

 concolorous with body. Dorsal stripe whitish; lateral stripe irregular and 

 rather wavy; stigmatal band whitish, faint. Tubercles black, conspicuous, 

 shining, each with a stiff black bristle. Feet concolorous with body. 



On July 10 a few specimens moulted the second time, many others 

 soon afterwards. 



Stage III. — Lengths mm. Head 0.9 mm. wide, greenish-brown, 

 distinctly marked with large black spots, which are of about the same size 

 as, and appear as a continuation of, the tubercles on the body. In 

 addition there are numerous dark dots over the whole head ; ocelli black. 

 Body above spiracles darker than in Stage II, and of almost the same 

 colour as the upper surface of a clover leaf upon which they were feeding. 

 Below stigmatal band the colour of the body is pale green. Dorsal stripe 

 white, distinct on all segments; lateral stripe white, but uneven and broken 

 in places ; stigmatal band whitish, not distinct. Tubercles black, set?e 

 now pale. Tubercles above spiracles surrounded with white. Spiracles 

 black. Thoracic feet rather translucent, prolegs concolorous with venter. 



On July 12 and 13 a large number of the larvae passed the third moult. 



Stage IV. — Length 13 mm. Head 1.4 to 1.6 mm. wide, of the same 

 appearance as in Stage HI. Body dark green above spiracles, paler on 

 ventral area ; some specimens darker green than others, and one with a 

 decided brownish tinge ; whole dorsum now marked with dots and short 

 streaks of white ; colour of all specimens in the incisures whitish or pale 

 yellowish. Dorsal stripe not so even as in last stage ; lateral stripe as 

 before ; stigmatal band wide, whitish, paler below the spiracles, and 

 suffused with green, some specimens bordered above the band with dark 

 green. Spiracles pale, rimmed with black. Feet concolorous with body ; 

 thoracic feet rather translucent and shiny. 



