(J. J. Ward, FES. 
Photos by} 
THE NEST OF A MASON-WASP. 
A sandy bank, between the bricks of a house, or the sunny side of a wall, may be taken as a site for the mud nest. 
mother Wasp builds up of little pellets of moistened sand and mud which she chews into a kind of mortar and moulds into a 
tube-like cell. There are eight cells shown here, each holding the grub of a Wasp. In the lower photograph the end cell has been 
opened and shows the grub, who has eaten up the eight or nine caterpillars provided for food. 
This the 
