228 CATERPILLARS AND THEIR MOTHS 



caterpillar had the outline of one half of a small elm- 

 leaf, the white obliques resembling veins. 



It molted for the third time on the third day from 

 the last molt. Its head was large, round, bilobed, 

 green, smooth, with an almost black line on each side 

 of the median suture. Its body was green, with a 

 broken brown substigmatal line edged above with 

 yellow, and a double yellow stigmatal line. The tho- 

 racic segments had a double white subdorsal line. The 

 fourth had a double dorsal hump with brown tips ; 

 the fifth had a much larger hump, yellow-green with 

 brown tips, the brown extending down the front and 

 back like a dorsal line; the sixth to tenth segments 

 had much smaller similar humps ; the eleventh had a 

 large single hump with a brown tip. From these 

 humps extended white oblique patches. The legs 

 were green, with a dark vertical line on each, the ab- 

 dominal props pale brown banded with darker, the 

 anal props slender, long, green, with a brown stripe on 

 each. The anal plate was shining green like the head. 

 The spiracles were green, with a brown line on each 

 side, and from them rayed upward white lines like 

 veins, distinct on the green sides of the caterpillar. 



On the fourth day from the last molt the crawler 

 molted for the fourth time. Its head was large, round, 

 smooth, shining green, with white and black face-lines. 

 The body was very slender through the thoracic seg- 

 ments, then became humped or toothed or serrate, 

 closely resembling the edge of an elm-leaf in profile, 

 and ended in a sudden curve down to the tips of the 

 anal props. 



When full grown it seemed deep blue-green, over- 



