SOCIAL HOMES 



195 



may be added upon the cover, and is completed with 

 an envelope or ceiling. The regularity and perfection 

 of construction is wonderful. 



P. liliacea makes a marvellous and often gigantic 



FIG. 34. View of interior of nest of Myrapetra, scutellaris. 



nest, four to five feet long, and of a diameter of one or 

 two feet, containing thousands of cells. It is sus- 

 pended from the branches of trees ; its covering is a 

 rough cardboard, sometimes of a red-brown ; it is 

 compressed at the top but widens out towards the 



O 2 



