EXPLANATIONS AND REFERENCES, 

 PLATE LXVII. 



Fig. 1. CHANTRANSIA PYGMAEA, natural size, . . 01 



Figs. 2, o. two filaments, 01 



" 4.o. clusters of carpogons, . 61 



Fig. G. CHANTRANSIA VIRGATULA, magnified 125 diameters, 01 



" 7. tetra sporangia . . 01 



" 8. natural size, growing on a marine 



plant, . . . 01 



" 9--11. BANGIA ATKo-PURPUiiEA, four specimens in different stages of 



growth and cell division, 55 



