SMVFLIES, AXTS, WASPS. BEES, ETC. 10? 



make houses of several cells or ''rooms" and store 

 food of paralysed insects in readiness for the 

 baby-grub which will hatch out from the egg the 

 mother wasp lays on one of the stored victims in 

 each cell. 



Mason bees also make mud homes of many cells 

 and store honey and pollen mixed into a paste 

 ^(bee bread), and the mother mason bee lays an 

 egg in each cell and then closes it up. 



Some of the Andrenids or short tongued bees make 

 little homes in the earth, and the mother bees 

 {Andrena, etc.) make their homes near to one 

 another to form a little village. This is also done 

 by some of the sand wasps of genus Bemhex. > 



Another Andrenid bee {Halictus) makes a com- 

 pound home common to several mothers. There is 

 a tunnel made in the earth which is the "common 

 entrance," and running off from this are side pas- 

 sages, and one mother takes charge of each side pas- 

 sage. This is an advance in social instincts. Each 

 mother bee makes little cells, stores honey and 

 pollen and then closes up the cell. 



Yet another advance is made by some true wasps 

 of the Genus Synagris- In some species of 

 Synagris the mother builds mud cells, but instead of 

 storing the paralysed caterpillars, laying an egg 

 on one and then closing the cell, the mother wasp 

 makes the cell, lays an egg, and then when she 

 thinks it is ready to hatch she hunts for caterpillars, 

 paralyses them, and puts them ready for the baby 

 wasp-grub. Day by day the mother feeds her 

 little baby with fresh caterpillars. Then when 



