48 SetchelL . — Species of Genus Doassansia , Cornu. 
Fig. 78. Portion of cross-section of the sorus of D. occulta, var. Farlowii. 
x 650. 
Fig. 79. Portion of cross-section of D. occulta (type), x 650. 
Fig. 80. Median optical section, of developing sorus of D. Martianojfiana. 
x 650. 
Fig. 81. Portion of cross-section of the sorus of D. deformans, x 650. 
Fig. 82. ,, „ „ „ „ Cornuella lemnae. x 650. 
Fig. 83. Developing sorus of C. lemnae. x 650. 
Fig. 84. Portion of cross-section of the sorus of Burrillia pustulata. x 650. 
All the figures were drawn from nature by the author. 
