MARINE ANIMALS THAT STING 



79 



COMPARISON OF THE VENOM ORGANS 

 OF PTEROIS, SCORPAENA, AND SYNANCEJA 



VENOM GLAND 



TERMINATION 



OF 

 VENOM GLAND 



INTEGUMENTARY, 

 SHEATH 



EXCRETORY 

 DUCT 



PTEROIS 



SCORPAENA 



SYNANCEJA 



Fig. 47. Showing a comparison of the three types of scorpionfish dorsal 



stings. (Diagrammatic) 



Zebrafish Type. The zebrafish, or Pterois type, have a venom ap- 

 paratus consisting of 13 dorsal spines, 3 anal spines, 2 pelvic spines, 

 and their associated venom glands. The spines are for the most 

 part long, straight, slender, and camouflaged in delicate, lacy- 

 appearing fins. Located on the front side of each spine are the 

 glandular grooves, open on either side, which appear as deep chan- 



