94 



THB bbb-kbepbr's guide ; 



(Fig-. 38, s, d) called the spermatheca, which receives the male 

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

 ever after do the work of impregnation. 



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



FiG. 38. 



FeyyiaU Organs, ina<jni/lf'(l, from LeucJ^art. 



Ovaries. 

 DD Oviducts. 

 S b Spermatheca. 

 Ph Poi.soa sac. 



Pg Poison glands. 

 iSi/ Sting glands. 

 i' 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, 



