94 



THB bek-kkepbr's guidb ; 



(Fig. 38, i, b) called the spermatheca, which receives the male 

 fluid in copulation, and which, by extruding its contents, must 

 ever after do the work of impreg-nation. 



This sac was discovered, and its use suggested, by Mal- 



FiG. 38. 



Female Organs, magnifled, from Leuckart. 



Ovaries. 

 DD Oviducts. 

 <S' b Spermatheca. 

 Pb Poison sac. 



Pg Poison glands. 

 Hg Sting glands. 

 S Sting. 



pighi as early as 1686, but its function was not fully demon- 

 strated until 1792, when the great anatomist, John Hunter, 

 showed that in copulation this was filled. The ovaries are 

 multitubular organs. In some insects, as laying workers, 



