THE PfiACTIOAL BflB GUIDE. 



Fig. 9. — STING OF THE BKK.— iMagnified thirty times.) 

 A, Sting separated from its Mnsclcs — ps, Poisou Sae; pg, Poison G-land , 

 6th g, Fifth Abdominal Ganglion; n, rt, Nervea; e. External Thin Membrane 

 joining Sting to last Abdominal Segment; i, k, and I, and i', k', and I', J. even 

 to move DartB; sh, Sheath; v. Vulva; p, Stiiij Palpua, or Feeler; 6, Barbs, B 

 ind 0, Sections through Darts and Sheath, magnified 300 timc>— »A, Sheath; 

 i, Darts; h, Barbs; p, Poison Channel. D, Tenuination of Dart, magnified 2O0 

 >ime»— 0, 0, Openings for Poison to escape into Wound 



