2, 1. Shaw: Merrillosphaera 129 
49. Carter’s figures (’59, pl. 1, fig. 10 a and b) of antheridia. 
X about 650. 
50. Carter’s figure (’59, pl. 1, fig. 8 b) of spermatozoids. x about 
1,000. 
TEXT FIGURE 
Fic. 1. Protoplasts and membranes of the body cells of Merrillosphaera 
tertia (Meyer) comb. nov. After Meyer. a, tangential section 
at about the level of the middle of the outer half of the cell; }, 
similar section at about the middle of the inner half of the cell; 
c, diagrammatic radial section through body cells. 
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