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BENNITT. 



blastostyle (Fig. 3) shows the thick, rounded " Deekenplatte " of 

 ectodermal cells about the terminal orifice, and bears usually a single 

 gonophore on one side; the male blastostyle (Fig. 4) is surrounded 

 by a solid mass of sperm-producing cells. 



Figure 3. Plumularia inermis. 



Figure 4. Plumularia inermis. 



showing stolon-formation. X 11. 



Female gonangium. X 11. 



Male gonangium and portion of colony, 



Plumularia setacea (Ellis). 



Corallina setacea, Ellis, 1755, p. 19, pi. 11. 



Plumularia setacea, Nutting, 1900, p. 56, pi. 1, figs. 1-4. 



Several colonies of Plumularia setacea were found on Sargassum; 

 in one group of colonies stolon-formation was extensive. 



