248 CATERPILLARS AND THEIR MOTHS 



and top. The dorsal tubercles of all the other seg- 

 ments were of deep orange, changing in most cases to 

 bright coral-red. The other tubercles were pale blue, 

 with more or less black in most instances. Some had 

 all the tubercles black except the dorsal ones, others 

 had all blue, others all blue with black rings, the dor- 

 sal ones being always orange or red. The legs were 

 yellow-green with black tips, the props either plain 

 yellow-green or having black marks. The anal shield 

 was very yellow-green. The spiracles were white, en- 

 circled by a very slight, dark line. The shades of 

 green varied much, and the amount and position of 

 black marking varied more, and in one or two cases 

 there was no black on the body, and but slight mark- 

 ing on the head and feet. 



Six days later they molted for the fourth time, 

 coming out with yellow-green heads, round and large. 

 The body was of a peculiar dark gray-green, lighter on 

 the dorsum and very dark on the venter, except the 

 first segment, which was light yellow-green like the 

 head. The dorsal tubercles were all yellow with shin- 

 ing black spines, the others pale blue encircled with 

 black. The legs were green with black tips, the props 

 very yellow-green, the spiracles white. They ate part 

 of their skins. In this stage they gave out a strong 

 odor like camphor, and still refused all leaves but 

 those growing on the tips of sapling shoots. This was 

 very noticeable, for most caterpillars prefer older and 

 tougher leaves after the second molt. 



In this stage occurred the greatest loss of specimens, 

 a loss we could account for in no way. The larva? grew 

 to be four inches long, and looked perfectly healthy, 



