D. ELECTRIC ORGANS. 



ELECTRIC organs are present in certain Fishes, and are most 

 strongly developed in a Ray (Torpedo raarmorata), found in the 

 southern seas, in a South American Eel (Gymnotus electricus) 

 and in an African Siluroid (Malapterurus electricus). 

 Gymnotus, the electric Eel, possesses by far the strongest electric 



FIG 100. Torpedo marmorata, WITH THK ELECTRIC ORGAN (E) EXPOSED. 

 8, skull ; tip, spiracle ; KK, gills; An, eye. 



power, next to it comes Malapterurus, and then Torpedo. The 

 electric batteries of these three Fishes are situated in different, 

 parts of the body ; in Torpedo they have the form of a broad 

 mass, extending throughout the substance of that part of the 

 body lying between the gill-sacs and the proptcrygium on each 



