Vì^^.. 16. — Now. — lùii])iisti egciia. Male. The insci-l 

 luis been unable to iVee the head. Note the arched thorax. 

 Owiiij^ to the delay it has become ,j)eriiianenlly arched so 

 that, even if the head \veie eventually freed, the insect \voul[) 

 be permanently cri[)p]ed and unable to live. 



