In our study on the identification of snake venoms by electrofocusing technics, the protein profiles of Naja naja naja, Naja nigricollis pallida and Naja nigricollis West Africa were compared. The typical profile of venoms of Elapidae was easily identified in this comparison. The two species could easily be differentiated, whereas the differences between the two sub-species were more difficult to evidence, since they are geographic variants of the same type.