THYREUS ABBOTII 85 



The caterpillars were very small and pale pinkish 

 green, with slender, dark caudal horns. They ate 

 a little of their egg-shells, but ate nothing else until 

 the third day, when they began to eat holes in wood- 

 bine-leaves. They grew glassy green after eating. 



Six days later they molted and came out very dif- 

 ferent, being covered with a white "bloom" which 

 concealed the pale green color almost entirely. The 

 legs and props were green, and the horn was like a 

 slender shaft set on a mound, the mound being yellow, 

 with a black patch in front, and the shaft white. The 

 crawlers ate their cast skins and were very easily dis- 

 turbed, twitching and jerking their bodies violently 

 when the leaves were touched. 



In three days the second molt took place, the only 

 changes being increased size, the dark color which 

 made the spiracles noticeable, and the loss of the cau- 

 dal horn. In its place was the yellow mound, with a 

 black semicircle around the base in front. 



Five days later they molted for the third time, and 

 changed even more than before. Part had the head 

 brown, of a pale " ashes-of-roses " shade, with wide 

 dark brown bands from the mouth-parts over the face 

 and head. These bands continued over the thoracic 

 segments, diminishing in size after the first segment. 

 The body was of ashes-of-roses lined with darker 

 brown, and looked like snake-skin, especially when 

 examined with a lens. The dorsal line was dark ; the 

 dorsum darker than the sides, with a wavy, light 

 subdorsal line. The venter and legs were pink-brown. 

 The props were ashes-of-roses banded with dark 

 brown, except the anal proi:)s, which were marked like 



