104 CATERPILLARS AND THEIR MOTHS 



base of the horn and extending a little way down the 

 anal shield was a red-brown patch, very noticeable in 

 every case but one, and plain to see in that one. The 

 caterpillars ate their egg-shells to the leaf in most 

 instances, then crawled quickly up the midrib on the 

 under side of a fresh leaf, drank from the drops sprin- 

 kled on it, and soon began eating holes through the 

 parenchyma. The two species were alike so far, and 

 we did not know whether we had both or not. They 

 ate woodbine very well, and were satisfactory, never 

 meddling with each other or hurting each other acci- 

 dentally. 



In four days they molted for the first time, and still 

 were alike, so much alike that no scrutiny with a 

 fifteen-diameters lens could detect any difference. 

 Their heads were small, round, flat, green, and held 

 nearly horizontal, giving them a crouching look as if 

 flattened along the leaf. Their bodies were green, 

 finely dotted with yellow-white, and having pale yel- 

 low-white subdorsal lines from head to horn. The 

 third segment was slightly swollen. The legs and 

 props were green, and the horn was as long as the 

 body, slender, almost black, rough, and red-brown 

 at base and on the anal shield. This color varied 

 from red-brown to wine-color. At the base of the 

 horn in front, on the red color, was a dark red dot 

 almost black, and evidently the center of the tubercle 

 which would replace the horn in some future molt. 

 The caterpillars still ate holes through the leaves. 



Three days later they molted again. This time the 

 two kinds could be distinguished and separated. 



Pandorus had the head small, flat, and held horizon- 



