NOTES ON FRESHWATER ALG 79 
a number they become irregular. Zoogonidia have not been 
observed 
84, Osiermatimes Facciotam oho Studi Algologici, i., Messina, 
1883. Diam. cell. veget. 26-42 
oem “9 Senens, Gursivall: 
They occurred in abundance attached to the su bmerged leaves of 
aquatic plants, but only ordinary vegetative cells were obse cal. 
85. Conocuzre comosa Klebahn in Pringsh. Jahrb. f. wissen. 
Bot. Bd. xxy. fase Brera cell. 13-14 yu. (Pl. 448, fig. 5.) 
Hab. New t, Hants. 
Each cell was globe with two pale “ees parietal chromato- 
phores and a large oil globule. There were five bristles to each 
cell, and five strong sheaths of celiditibentie length. Klebahn’s 
original form did not appear to possess more than three bristles to 
each cell, but otherwise the plants are very similar 
Polycheetophora, gen. n. 
Thallus minutus, e cellulis paucis formatus, subfilamentosus vel 
interdum unicellularis ; cellulis subglobosis, ellipsoideis vel ovoideis 
ana crassissima valde lamello osa; cellula unaquaque setis 
longis flexuosis simplicibus non vaginatis 8-12 instructa; chroma- 
— Sees parietalibus, sepe indistinctis, cum pyrenoidibus 
singulis ? 
86. Polychetophora lamellosa, sp. 8 (Pl. 448, figs. re 
Character idem ac generis. Diam. cell. 19-35 »; crass. cell 
membr, 2°8-10'5 p; wee set. 86-183 p 
Hab. In pond, Botanical Garden, “le Gloucestershire ; 
ae Tolypothria ps, @a 
lant is characterized by the thick lamellose cell-walls, 
Le are furnished on their outer surface with a number of long 
Hernbes bristles. The number of bristles attached to the wall of 
each individual cell varies from eight to twelve. The bristles are 
delicate, attenuated to fine points, quite simple and devoid of 
icagt i 
stalked appearance to such a cell, and the growth greatly pve 
t in Hormotila Borzi. More often the cells occur in 
short irregular filaments a six or sient cells. The bana oni ry 
Bohlin (in Bih. till K. Sy. Akad. aiadl, Bd. iii. 1894), 
it is readily distinguished by the tory cols of the Galiage 
which 
which is subfilamentous or even unicellular, by the ame = cad = 
