Fig. 42. Top: Head of Trachinus, showing the dorsal and opercular stings. 

 Center: Dorsal Spine of Trachinus vipera, showing grooves in which the venom 

 glands are located. Side and posterior views. Bottom: Operculum of T. vipera 

 snowing the dagger-like spine to which the venom gland is attached. Side view 



and cross section. 



71 



