SPHINX DRUPIFERARUM 141 



with red and yellow granules. The general effect was 

 red and yellow. The larva ate its skin after molting. 



A week later it molted for the fourth time. The head 

 was deep green, with a wide purple-brown stripe on 

 each side, and was very smooth. The body was smooth, 

 yellow-green dotted with yellow, with white obliques 

 edged above with mauve. The legs were yellow, with 

 red-brown tips ; the props green, with a yellow line 

 above the planta of each. The anal plate was edged 

 with yellow. The horn was long, very stout, curving 

 backward, smooth, red-brown, almost black at tip, with 

 a black line up the front, and yellow from the last pair 

 of obliques on the base behind. The spiracles were 

 orange and not conspicuous. Three days later the 

 thoracic segments were clear yellow-green without 

 dots, and the abdominal segments showed fewer dots 

 than before. 



The crawler now ate voraciously, and had three 

 ways of treating leaves. It would begin at the tip and 

 eat down to the base on one side of the midrib ; or it 

 would begin about an inch from the tip, eat in to the 

 midrib and then down in a curve nearly to the base 

 of the leaf, then treat the other side in the same way, 

 leaving a leaf -tip shaped like an arrow-head, and a 

 ragged base ; or it would begin at the base and eat all 

 the leaf from one side of the midrib, and leave the 

 other side whole or but partly eaten. 



It was a very quiet larva, never jei'king or twitching, 

 and devoted itself to the business of feeding. It pre- 

 ferred the younger leaves of wild cherry — not choke- 

 cherry — to the last of its leaf-eating life, but would 

 eat older leaves if the younger ones were not to be had. 



