SAWFLIES, ANTS, WASPS, BEES, ETC. 119 



A very curious fact is the development of some 

 groups of these tiny parasites which has been dis- 

 covered within the last few years, namely, that the 

 ovum or egg deposited in the caterpillars swells 

 out and divides into a number of separate eggs, each 

 capable of producing a perfect wasp, so that each 

 egg deposited by the parasite multiplies into many 

 This discovery explains the rapidity of the increase 

 of many of these minute creatures." 



