199 
Euastrum elegans (Bréb.). Ktz. 
Micrasierias laticeps mihi f. 
* — didymacantha  (Nàg.). 
— Cruz melitensis (Ehrb.) Ralfs. 
— fwrcata  Ralfs. 
* — foliacea Bailey. 
— truncata (Corda) Bréb. 
— rotata (Grev.) Ralfs. 
* B radiosa Ralfs 
* Staurastrum orbiculare (Ehrb.) Ralfs. 
— aristiferum Ralfs. 
P. — margaritaceum (Ehrb.) Menegh. 
— tetracerum. Ralfs. ] 
T — polymorphum Bréb. 
— gracile Ralfs. 
Xanthidium fasciculatum. Ehrb. 
Arthrodesmus Incus (Bréb.) Hass. 
E — convergens Ehrb. 
— subulatus Ktz. 
Nonnisi unum genus, Onychonema, nec in America boreali 
nec in Europa adest, sed in Bengalia inferiori, ubi tamen diver- 
sam speciem offert. 
Operum, qui in hoc opusculo citavi, hac ipse vidi et consului: 
Agardh, C. A. Systema Algarum. Lund& 1824 (Ag. Syst. Alg.). 
— Neue Gattungen und Arten von Algen; Flora oder Botanische Zeitung, 
lOter Jahrg. ?ter Bd., 1827 (Ag. Flora). 
Archer, W. Supplementary catalogue of Desmidiacec found in the neigh- 
bourghood of Dublin; Proceedings of the Dublin University Association 
Vol. í, part. 1, 1858. (Archer Proc. Dubl.). 
— Description of a New Species of Micrasterias; The Dublin Quarterly 
Journal of Science. Vol. ll. London 1862. (Archer Descrip. 1862). 
Bailey, J. W. American Bacillaria, part. I, Desmidiaced; American Journal 
of Science and Arts, Vol. XLI, Nr. 2. (Bailey Desm.). 
— Mieroscopical Observations made in South Carolina, Georgia and Florida; 
