14 MICROSCOPICAL OBSERVATIONS. 



FLORIDA. 



PILATKA. 



Feb. 20th, 1850. In sphagnous swamps, near the village of Pilatka, Florida, 

 I found the species named below. 



DESMIDIE*. DIATOMACE.-E. 



Closterium acerosum, Schr. Himantidium diodon, Ehr. 



Dianae, Ehr. Pinnularia viridis, Ehr. 

 *Cosraarium depressa, B. 



Didymoprium Borreri, Ralfs. INFUSORIA. 



Didymocladon furcigerus, Ralfs. Actinophrys viridis, Ehr. 



Docidium minutum, Ralfs. Amoeba princeps, Ehr. 



Euastrura elegans, Breb. Arcella dentata, Ehr. 

 " sublobatum, Breb. " vulgaris, Ehr. 



Micrasterias truncnta, Breb. Metopidia lepadella, Ehr. 



Penium digitus, Breb. Monostyla lunaris, Ehr. 



Staurastrum gracile, Ralfs. Noteus quadricornis, Ehr. 



" tricorne, Breb. Pterodina patina, Ehr. 



" polymorphum, Breb, Rotifer vulgaris, Schr. 



Xanthidium armatum, Ehr. Stylonychia mytilus, Ehr. 



" fasciculatum, Ehr. Cothurnia imberbis, Ehr. 



PILATKA. continued. 



The following species were found in a living state, attached to a log in the 

 St. John's River, at Pilatka, viz : 



Bacillaria paradoxa, Ehr. Odontella polymorpha, Kg. 



*Campylodiscus argus, B. 



PILATKA. continued. 

 In a ditch by the roadside, three miles from Pilatka, I found these species, 



viz : 



DESMIDIE.E. DIATOMACE^E. 



Didymoprium Borreri, Ralfs. Eunotia tetraodon, Ehr. 



(in conjugation.) 



" Grevillii, Ralfs. INFUSORIA. 



Euastrura ampullaceum, Ralfs, Colurus tricuspidatus, Ehr. 



Hyalotheca dissiliens, Breb. Dinobryon sertularia, Ehr. 



Tetmemorus Brebissonii, Ralfs. Pterodina patina, Ehr. 



Stentor polymorphic, Ehr. 



