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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. Phimularia inermis. Female gonangium. X 11. 

 Figure 4. Phimularia inermis. Male gonangium and portion of colony, 

 showing stolon-formation. X 11. 



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. 



A 



k 



