CATALOGUE OF PLANTS. 611 



MBR1SMOPBDIA, Meyen. 



M. convoluta, Breb. 



Fresh water. Frequent in ponds. 



COELOSPELaERIUM, Nseg. 



C. Kutzingianum, Nseg. 



Fresh water. On stagnant pools ; frequent. 



CLATHROOYSTIS, Henfrey. 



C. roseo-persicina, Cohn. 



Marine. Atlantic : On marshes and on mud and small peb- 

 bles, Atlantic City Morse. 



POLYOYSTIS, Kutz. 



P. pallida (Kutz.), Farlow. 



Marine. Atlantic : On decaying algae Morse. 



P. ichthyoblabe, Kutz. 



Fresh water. Occasional in small pools. 



BNTOPHYSALIS, Kutz. 

 B. granulosa, Kutz. 



Marine. Atlantic : On shells, Atlantic City Morse. 



GOMPHOSH^EJRIA, Kutz. 

 G. aponia, Kutz. 



Fresh water. In ponds and pools ; frequent. 



MICRO OYSTI8, Kutz. 



M. protogenita (Bias.), Rab. 



Terrestrial. On wet timbers, trunks of trees, etc. 



