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verzeichnet. Polygastern: Achnanthes arenicola B., brevi- 

 pes /4g., Acineta Lyngbyi, mystacina, Actinoptychus duode- 

 narius, senarius, Amoeba princeps, Amphileptus Anser; Amphi- 

 prora alata, constricta, ornata B., pulchra B., quadri- 

 fasciataB., Amphora arnp hioxys B., libyca, Ancistrodesmus 

 falcatus Corda, Arcella aculeata , dentata , Enchelys (hyalina)^ 

 vulgaris, Arthrodesmus convergens, Tncus Breb., Bacillaria para- 

 doxa, Campylodiscus Argus B., Clypeus, Carchesium polypinum, 

 Cerataulus turgidus, Ceratone'is Clost erium, Closterium 

 acerosum, Dianae , Ehrenbergii Menegh. Jenneri Ralfs, Lunula, 

 setaceum, turgidurn, Cocconei's Pediculus, Scutellum, Cocconema 

 cymbiforme, Coscinodiscus eccentricus , lineatus, Oculus Iridis, 

 radiatus, subtilis , Cosmarlum amoenum Breb. connaturn Breb. 

 Cucumis Corda, depress um B. , margaritiferum Menegh., orna- 

 tum Ralfs, pyramidatum Breb., Thwaitesii Ralfs, Cothurnia Äar- 

 niensis, imberbis, Denticelia tridentata, Desmidium Swartzii, 

 quadrangulatum Ralfs, Diatoma Ehrenbergii?, stellatum B., 

 Dlctyocha Fibula, Didymocladon C erber us B , furciferum Ralfs, 

 longispinum J$., Didymobryon Borreri Ralfs, Difflugia spi- 

 ralisB., Dinobryon Sertularia, Docidium Ehrenbergii Ralfs, hirsu- 

 tum B., minut um Ralfs, nodulosurn, Breb. undulalum B., 

 Euastrum ampullaceum, Ralfs, binale, crassum Breb., elegans 

 Breb., insigne llass., roslratum Ralfs, sublobaturn Breb. verruco~ 

 sum, Euglena Pleuronectes, viridis, Eunotia gibba, Librile, nodosa, 

 Eupodiscus Baileyi, Rogersii, radiatus, Gallionella aurichalcea, 

 sulcata, varians, Gomphonema acuminaturn, Gonium g!aucum t 

 Grammatophora marina, Himantidium Arcus, bidens, Hyalotheca 

 dissiliens , Micraslerias arcuata B., americana Ralfs, Baileyi 

 Ralfs, crenata Breb., denticulata Ralfs, expans a B., fimbriala 

 Ralfs furcata, incisa Kg., oscitans Ralfs, papillifera Breb. 

 pinn atifida Kg., q uadrata B. , radiosa Ag., ringens B., 

 rotata Ralfs, truncata Breb., Navicula Amphigomphus , ballica, 

 cuspidata? elongata Anglorum, Hippocampus, Sigma, Odontella 

 polymorpha Kg., Opercularia arliculata, Pedlastrum Boryanum 

 Menegh., heptactis Menegh. Penium Brebissonii Ralfs, Digitus Ralfs, 

 margaritaceum Breb., Peridinium C a r o linianum B., cinctum, 

 Pinnularia Co operi B., didyma, interrupta Kg., permag na B., 

 viridis, Pyxidicula cornpressa B., Rhabdonema adriaticum Kg., 



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