PAONIAS EXCCECATUS 185 



One brood had an egg-period of ten days ; another 

 of eight ; another of seven. 



One brood had the molts follow in five, five, seven, 

 eight days; another in fonr, four, seven, five days; a 

 third in seven, five, seven, seven days. 



One brood fed, after the last molt, for sixteen days, 

 one for twelve, another for ten days. One brood was 

 seven days in pupating, another five. 



One set of hatehliugs was pale green, granulated, 

 unmarked, with a dark brown, rough horn ; pi'ef erred 

 Pyrus japonica. Another w^as green, granulated, with 

 yellow obliques and a yellow lateral horizontal line on 

 the thoracic segments ; ate oak. A third brood was 

 green, granulated with yellow, had yellow face-lines, 

 yellow subdorsals from head to horn, and yellow ob- 

 liques. Three of this brood had j^lain green horns, but 

 the others had horns yellow at the base, then bright red, 

 with a ring of yellow half-way to the tip. They fed 

 on poplar. A fourth brood had smooth green heads, 

 dotted with white. The bodies were rough and green, 

 with faint white subdorsal and oblique lines. These 

 had horns red at base and tip and pale green between. 

 They preferred white birch. 



None ate the egg-shells, and all were very active. 

 When disturbed they reared on their anal props and 

 angrily jerked their heads and thoracic segments over 

 to one side, keeping the curled position until all cause 

 of disturbance was removed. Their heads were round. 



After the first molt the heads were shaped like 

 apple-seeds w^ith the point uppermost, and all the 

 broods were like their first stage except one, which 

 had a crest of yellow granules on the first segment, 



