lii 



EVKNINGS AT TIIK irTCROSCOPK. 



covered all over, l^ut especiallj towards the neck, with 

 small glands set transversely. It is rounded behind, 



M-here it is entered by a 

 vciy long and slender mem- 

 branous tube, which, after 

 many turns and windings, 

 gradually thickening and 

 becoming more evidently 

 glandular, terminates in a 

 blind end. 



This is the apparatus for 

 preparing and ejecting a 

 powerful poison. The glan- 

 dular end of the slender 

 tube is the secretin gf orcjan : 

 here the venom is pre- 

 pared ; the remainder of 

 the tube is a duct for con- 

 veying it to the bag, a re- 

 servoir in which it is stored 

 for the moment of use. By 

 means of the neck it is 

 thrown into the groove at 

 the moment the stin^ is 

 projected, the same mus- 

 cles, probabh^, that dart 

 forward the weapon com- 

 pressing the poison-bag an d 

 causing it to pour forth its 

 contents into the groove, 

 whence it passes on be- 

 tween the two spears in!o the wound which they have 

 made. 



STIXG OF BEE. 



a. Tip of Lancet, more enlarged. 



