PLATE VII. 
Bicellaria. 
PAGE 
Figure 1 . — Bicellaria pectogemma, 1 ' . 33 
la, magnified; lb, 1 c, avicularia, more highly magnified. 
„ 2 . — Bicellaria navicularis, . . „ . . . 32 
2a, magnified ; 2b, ooecium. 
1 Mr. Goldstein having, since the plate was printed several years ago, given another name to this species, 1 have 
accordingly adopted it. 
