PLANKTON ALG M OK LAKE ERIK. 
891 
List of plants determined in Lake Erie. 
CONFER V OIDEJE. 
Coleoelicete scutata Breb.* 
(JEdogonium cryptopornm Wit.tr.* 
Prasiola sp. 
Stigeoclonium tenue Kg. 
Chcetophora endivicefolia Ag.* 
Aphanochcete repens A. Br. 
Cladophora glomerata Kg. 
var. subsimplex Rabb. 
Hormidium nitens Menegh. 
flaccidum (Kg.) Braun. 
Bumilleria sp. 
SIPHOPHYCEiE. 
Protosiphon botryoides (Kg.) Klebs. 
PROTOCOCCOIDEE3. 
Volvox globator Ehrb. 
Eudorina elegans Ehrb. 
Pandorina morum Bory. 
Synura volvox Ehrb.* 
Gonium tetras A. Br.* 
pectorale Muller.* 
Clilamydomonas communis Snow. 
gracilis Snow. 
globosa Snow. 
Hydrodiet yon utriculatum Roth. 
Scenedesmus ac utifo i ■mis Sch rbder . 
acutus Meyen. 
alternans Reinscli. 
bijugatus Kiitz. 
var . flexuosus Leran. 
brasiliensis Bohlin. 
caudatus Corda. 
var. abundans Kirch, 
var. setosus Kirch. 
dimorphus Kg. 
obliquus (Turpin) Ktz. 
opoliensis Richter, 
var. carinatus Lenm. 
quadricaudatus (Turp.) Breb. 
var. ecornis Ehrb. 
Ccelastrum microporum Nag. 
proboscideum Bohlin. 
reticulatum (Dang.) Senn. 
sphcericum, Nag. 
Sorastrum spinulosum Kg.* 
Pediastrum boryanum Menegh. 
var. longicorne Reinscli. 
constrictum Hass.** 
ehrenbergii A. Br.* 
pertusum Kiitz. 
var. brachylobum A. Br. 
var. clathratum A. Br. 
var. microporum A. Br. 
rotula Elirb.* 
sturmii Reinsch. 
Stanrogenia apiculata Lenm. 
quadra ta (Morren) Kiitz. 
rectangularis Nag. 
Kirclineriella lunaris (Kirch. ) Mob. 
var. diance Bohlin. 
PROTOCOCCOTDE3. 
Kirehneriella obesa (West) Sclimidle. 
var. contort a Sclimidle. 
Golenkinia fenestrata Schriid. 
Ophioeytium parvulum A. Br.* 
capitation Wolle. 
Characium ambiguum Herm. 
angustum A. Br.* 
Polyedrium cruentum Nag. 
enorme D. By.* 
gigas Wittr.** 
lobulatum Nag. 
minimum A. Br.* 
muticum A. Br.* 
pinacidium Reinsch. 
trigonum Nag.* 
var. tetragonum Rabli. 
Dictyosphcerium ehrenbergian um Nag. 
pulchellum Wood. 
Hormospora sp. 
Tetraspora n a tans Kiitz. 
Schizochlamys gelatinosus A. Br. 
Fusola viridis n. sp.*** 
Dimorph ococcus lunatus A. Br.*** 
Porphyridium cruentum Nag.* 
Botryococcus braunii Kg. 
Glcecystis ampla Rabli. 
Nephrocytium agardliianum Nag. 
Oocyst is borgei Snow. 
lacustris Cliodat. 
solitaria Wittr. 
Clwdatella citriform is Snow. 
Rhaphidium biplex Reinsch. 
braunii Nag. 
convolutum Rabli.* 
falcula A. Br. 
minutum Nag. 
polymorphum Fres. 
Rhaphidium (?) spdrale Turner. 
Selenastrum acuminatum Lagerh. 
bibraianum Reinsch. 
gracile Reinsch. 
Dactylococcus infusionum Nag. 
Sticliococcus bacillaris Nag. 
Pleurococcus aquaticus Snow. 
regularis Artari. 
Chlorella inf usionum Beyerinck. 
vulgaris Beyerinck. 
Chlorococcum infusionum Rabli. 
natans Snow. 
Botrydiopsis eriensis Snow. 
Chlorosphocra lacustris Snow. 
parvula Snow. 
Scotinosphcera paradoxa Klebs. 
CONJUGATES. 
Mesocarpus sp. 
Hyalotheca dissiliens Breb. 
Onychonema Iceve Nordst. 
var. minus. 
Sphcerozosma filiforme Rabli. 
Closterium acerosum Ehrb. 
diance Ehrb. 
ehrenbergii Meneg. 
leibleinii Kg. 
lineatum Ehr.** 
Note. — A specimen was found agreeing m every re- 
spect with Ccelastrum cubicum Niig., which produced 
typical coenobia of Ccelastrum proboscideum , so that the 
species of Ccelastrum cubicum is to be questioned. 
