MICROSCOPICAL OBSERVATIONS. 



GRAHAMVILLE, s. c. continued. 

 In a ditch by the roadside, near Gopher Hill, I found 



Micrasterias pinnatifida, Ralfs. 

 Xanthidium armatum, Ralfs. 



Pinnularia amphigompha, Ehr. 

 " iridis, Ehr. 



GRAHAMVILLE, S. C. Continued. 



Near the village, by the side of the road to " Hap Hazard," I found among 

 the roots of Utricularia verticillata, the following species, viz : 



DESMIDIE.E. 



Aptogonum desmidium, Ehr. 

 Closterium acerosiun, Schr. 

 Desmidium Swartzii, Ag. 

 Didymoprium Grevillii, Ralfs. 

 Euastrum affine, Ralfs. 

 Penium interruptum, Breb. 

 Spirotsenia condensata, Breb. 

 Xanthidium cristatum, Breb. 

 " fasciculatum, Ehr. 



DlATOMACE.E. 



Himantidium bidens, Ehr. 

 Diatoma stellata, B. 



INFUSORIA. 



Amoeba princeps, Ehr. 

 Arcella vulgaris, Ehr. 

 " hyalina, Ehr. 

 Dinobryon sertularia, Ehr. 

 Hydatina senta, Ehr. 

 *Peridinium carolinianum, B. 

 Pterodina patina, Ehr. 



GRAHAMVILLE, s. c. continued. 

 A ditch by an old saw-mill near the village furnished these species, viz : 



DESMIDIE.E. 



Euastrurn ansatum, Ehr., abundant. 

 Hyalotheca dissiliens, Breb. 

 Micrasterias rotata, Ralfs. 

 Penium clostcroides, Ralfs. 

 " interruptum, Breb. 

 Spiroteenia condensata, Breb. 



DIATOMACE^E. 

 JVaunema, undetermined. 

 Surirella splendida, Ehr. 



A.LGJE. 



Tetraspora lubrica, Ag. 

 Vaucheria cespitosa, Ag., with a 

 parasitic Rotifer in its branches. 



GRAHAMVILLE, s. c. continued. 

 The mill-pond at " Hap Hazard" furnished the following species, viz : 



Closterium acerosum, Schr. 



lunula, Ehr. 



Didymoprium Borreri, Ralfs. 

 Docidium nodulosum, Breb. 

 Euastrum verrucosum, B. 

 Micrasterias incisa, Kg. 



DESMIDIE/E. 



Micrasterias denticulata, Breb. 

 Penium digitus, Breb. 

 Scenedesmus obliquus, Kg. 

 *Sphserozosma serratum, B. 

 Spirotsenia condensata, Breb. 

 Staurastrum margaritaceum, Ehr 



