288 CATERPILLARS AND THEIR MOTHS 



The next day two males emerged, and evidently one 

 of tliem mated with, the female, for all the eggs she 

 laid after that, ninety in two nights, hatched in due 

 season. 



The eggs were small, very round-oval, clear golden 

 yellow, but grew orange, then brown, then greenish 

 gray. Then the shells became f)erfectly transparent, 

 showing the brown heads and yellowish bodies of the 

 larvff^ curled up in the eggs. 



They hatched on the eighteenth day, another lot 

 hatching thirteen days, after they were laid. 



The little caterpillars were about an eighth of an 

 inch long, with shining black heads and yellow 

 bodies. There were two l)lack dorsal lines, and on 

 the second segment were two yellow tubercles, each 

 ending in two setse. There were sparse short setse on 

 the body. The legs were almost black, the props 

 yellow. They grew greener with food, but would eat 

 only soft maple and cut-leaved maple. From sugar- 

 maple they crawled away with every appearance of 

 dislike. They fed and lived in close rows on leaves. 

 Two days later they were light green striped length- 

 wise with dark green, the dorsal line being darkest. 



On the seventh day they molted, the other brood 

 molting on the tenth day. Their heads were polished 

 black, their bodies green striped with darker green, 

 and having on the first segment four raised dots of 

 shining black; on the second two long black dorsal 

 horns; on the eleventh a transverse row of short, 

 sharp, black spines; on the anal shield a V-shaped 

 tubercle, and two spines like those on the eleventh 

 segment; the other segments had six short, sharp, 



