Freshwater Algse and Schizo^ghycede. By A. W. Bennett. 5 
IjLOTRICHACE-aE. 
Ulothrix zonata Ktz., H, D. 
CoNFERVACE^. 
Draparnaldia glomerata Ag., H. 
Stigeoclonium protensum Ktz., H. 
Filament somewhat moniliform, about 12 • 5 /x broad in its broadest 
part ; cells ratber longer than broad, and slightly constricted at the 
septa in the lower part of the filament ; those towards the apex of the 
branches much longer. Each branch terminating in a hyaline filament 
of very great length, as much as 380 ya, septated at long intervals ; 
the branches themselves sometimes again branching. Small stream 
near Lyndhurst. 
Khizoclonium geminatum n. sp., H. Figs. 6, 7. 
Filaments long, slender, curving and interlaced ; cells about 
20 X 12*5 /X, with very thin cell- walls. From the filaments are put 
out here and there short root-like processes filled with green endo- 
chrome ; these are sometimes solitary, but' more often two proceed 
from adjacent cells, or even two from the same cell ; and these are 
then curved and interlace with those of an adjoining filament, but 
without any actual conjugation. A ball of flocculent matter commonly 
collects round these protuberances, firmly welding the filaments 
together. Forming, with the preceding, a flocculent scum on a small 
slow stream near Lyndhurst. Most of the species of the genus grow 
in brackish water. 
Desmidiace^. 
Hyalotheca dissiliens Sm., H. 
„ mucosa Ehrh, H. 
Desmidium Swartzii Ralfs, H. 
Docidium Ehrenbergii Ralfs, H. 
Cylindrocystis diplospora Lund., H, D. 
* „ crassa DBy., H. 
Penium cylindrus Ehrb., H. 
„ digitus Ehrh, H, D. 
„ closterioides Ralfs, H, D. 
„ Brebissonii Ralfs, H, D. 
„ didymocarpum Lund., D. 
Tetmemorus Brebissonii Men., H, D. 
„ granulatus Breb., H. 
., laevis Ralfs, H, D. 
Spirotaenia condensata Breh, H, D. 
