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BEITRAG ZUR KENNTNIS DER GATTUNG TETRASTEMMA (HOPLONEMERTINI)

Geza Iuliu Muller
Institut Roumain de Recherches Marines Constanta


Abstract
The paper presents a revision of the pontic species belonging to the
genus Tetrastemma(Hoplonemertini), including a detailed redescription
of the species Tetrastemma bacescui G. J. Muller 1962 and the original 
description of Tetrastemma glandulidorsum n. sp. Based upon analysis 
of generic and specific differential characters, the author proposes
a new generic diagnosis, in order to eliminate the hitherto collective
status of this genus. A key for identification of the mediterranean
and pontic species, as well as some ecological notes are also given.