Medusae of the world . exnr Fig. 286.—Solmaris fiavescens. Interradial section, drawn by the author, at Naples Zoological Station. em, cord of entoderm at the bell-margin. e*,exumbrella. exnr, exumbrella nerve-ring, gon, male gonad, st, centralstomach, su, subumbrella. v, velum. Ectodermal nuclei are shown in solid black and entodermal nuclei arerepresented as circles. piece with 4 small and another with 4 large cells, the large-cell piece develops irregularly andthe small cells degenerate. A meridional cut through the 8 or 12-cell stage gives a medusawith only local

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Keywords: ., bookcentury1900, bookdecade1910, booksubjectcnidari, bookyear1910