10 



MICROSCOPICAL OBSERVATIONS. 



Amceba princeps, Ehr, 

 Arcella vulgaris, Ehr. 

 " dentata, Ehr. 

 Epistylis anastatica, Ehr. 



INFUSORIA. 



Hydatina senta, Ehr. 

 Rotifer vulgaris, Schr. 

 Scaridium longicaudum, Ehr. 

 Stentor polymorpha, Ehr. 



HAZARD'S BACK CREEK, NEAR GRAHAMVILLE, s. c. 



In the floating scum of this salt water creek, at Mr. Bolen's Landing, the fol- 

 lowing: Diatomacese were detected : 



Amphiprora alata, Ehr. 

 Amphora libyca, Ehr. 

 Bacillaria paradoxa, Ehr. 



Coscinodiscus subtilis, Ehr. 

 Navicula Baltica, Ehr. 

 Pinnularia interrupta, Ehr. 



The following Algfe were also found at the same place, viz : 



Delesseria Leprieurii, Mont. Ectocarpus littoralis, Lyngb. 



BRYAN COUNTY, GA. 



January and February, 1850. In ditches by the side of the Ogeechee Cause- 

 way, on the road from Savannah to Darien, I noticed the following species 

 among the roots of Utricularia verticillata, which grows here in great 

 profusion, 



DESMIDIEJE. 



Ankistrodesmus falcatns, Corda. 

 Arthrodesmus convcrgens, Ehr. 

 Closterium acerosum, Schr. 



Ehrenbergii, Menegh. 

 " Leiblenii, Kg. 

 " setaceuru, Ehr. 

 Didymoprium Borreri, Raits. 

 Docidium Ehrenbergii, Ralfs. 

 " nodulosum, Breb. 

 Euastrum rostratum, Ralfs. 

 Micrasterias americana, Ralfs. 



denticulata, Breb. 

 " incisa, Kg. 



rotata, Ralfs. 



DlATOMACEjE. 



Himantidium arcus, Ehr. 

 Tabellaria flocculosa, Ehr. 



INFUSORIA. 

 Arcella dentata, Ehr. 



" vulgaris, Ehr. 

 Euglena pleuronectes, Ehr. 

 Euplotes charon, Ehr. 

 Rotifer vulgaris, Schr. 



" macrurus, Ehr. 

 Stentor polymorpha, Ehr. 

 Synura uvella, Ehr. 



ALG.E. 



*Aporea ambigua, B. (PI. 3, fig. 3.) 

 Bulbochaete setigera, Ag. 

 Coleochsete scutata, Breb. 



At the same locality, Hydrocharis spongiosa, Riccia fluitans, and a species of 

 Azolla, occur abundantly. 



