120 



WASP STUDIES AFIELD 



coernlcus that lived more than twelve hours after it was 

 beheaded. 













a&sfclfcSS 



FIG. 30. Nests of Sccliphron cacmcntariuin or Chalybion cacru- 

 Icurn. Interior and exterior views. Two-thirds natural size. 



One often pictures the male wasps of this species as lazy, 

 good-for-nothing fellows, while the females are incessantly 

 busy, bringing in mud and spiders and making the nest; but 



