One of cells derived from one of the megameres in the segmenting egg of Clepsine, which later give rise to part of the germinal bands from which the nerve cord and the nephridia develop.
[Greek] One of cells derived from one of the megameres in the segmenting egg of Clepsine, which later give rise to part of the germinal bands from which the nerve cord and the nephridia develop (zool.).