June, 1922] 
DUPLER — • REBOULIA HEMISPHAERICA 
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71:61-74, figs. 1-2 1. 1921. 
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EXPLANATION OF PLATE XIV 
All drawings were made with a camera lucida and have been reduced one half in 
reproduction. 
Fig. 25. Antheridium initial. X 650. 
Fig. 26. Section of a young male receptacle, showing the centrifugal development of 
antheridia. X 155. 
Figs. 27, 28. Detail of the anterior and posterior margins, respectively, of figure 26; 
figure 28 shows antheridium initial; figure 27, basal cell cut off. X 650. 
Fig. 29. Portion of a receptacle showing younger antheridia on either side of the 
older one. X 650. 
Fig. 30. Section of a young receptacle with an apical cell at the anterior margin of 
the disc, some distance posterior to the apical cell of the thallus. X 155. 
Fig. 31. Detail of a portion of figure 30. X 650. 
Figs. 32-35. Development of young antheridia. X 650. 
Figs. 36-40. Young antheridia with apical cell of two cutting faces. X 650. 
Figs. 41-46. Transverse sections of young antheridia. X 650. 
