p. 147 - 152 CONTRIBUTIONS TO THE KNOWLEDGE OF THE Ommastrephes bartramii(Lesuer, 1821) OFF SOUTH-WESTERN AREA, ATLANTIC OCEAN Cornelia Maxim Institut Roumain de Recherches Marines Constanta Abstract The paper presents the allometrie of Ommastrephes bartramii species (LESUER, 1821) caught off Argentinian coast in January- April 1978. There are pointed out the population characteristics comparatively with the northern populations. There are analysed the dependence between some calculated parameters: mantle length, fin length on fin width, and mantle length on IV arm length.