Biogeographical considerations of the Adriatic Prosobranchiata

Abstract

      Most of the gastropod species, studied from a biogeographical point of view, belong to the Mediterranean province.

     Side boundaries of the distribution of the Adriatic Prosobranchiata re­corded were found to be relatively pronounced. The northern boundary is char­acterized by Mediterranea-boreal and boreal elements and the southern boun­dary by Mediterranean-West African elements. Neither the available literature nor my own observations showed any endemic Adriatic species of the Prosobranchiata group.

       The material on Prosobranchiata group used originates from samplings in the Adriatic and from the available literature.