The literature on elasmobranch peripheral blood cells is reviewed and the results of light and electron microscope studies of 15 specimens of Torpedo marmorata Risso and 8 specimens of Torpedo ocellata Rafinesque (Pisces Torpedinidae) are presented. The haematological mean values observed were: haemoglobin 3.22 g/100 ml; haematocrit 2-4.54; red cells 201160/mm3; white cells 43870/mm; thromboeytes 19530/mm3; MCV 1039 μm3; MCH 149 pg; MCHC 13%. On blood smears stained with M.G.G. and peroxidase-benzidine reaction, the following cells were identified and described: mature erythrocytes, acidophilic erythroblasts ( 17,5%, basophilic erythroblasts (1.7%), lymphocytes, monocvtes, eosinophilic granulocytes, neutrophilic granulocytes and thrombocytes. An ul¬trastructural study of these cells and their specific granules is included.