Adams — A List of S/jnotiijms of Irish Algae. 185 



VI. — Chlorophyoeae — continued. 

 Oocystia 



crassa Wittr. = 0. Marssonii Lemm. 



setigera Arch. = Chodatella amphitricha Ghod. 

 Palmella 



botryoides Kiltz. = Gloeoeystis botryoides Niig. 

 Pediastrum 



angulosum Ehr. = P. Tetras Balfs. 



Ehrenbergii A. Br. = P. Tetras Balfs. 



ellipticum Balfs. = P. eonstrictum Hass. 



granulatum Kiltz. = P. boryanum Menegh. 



heptacfcis Ehr. = P. Tetras Balfs. 



pertusum Kiltz. = P. duplex Meyen. 



rotula A. Br. = P. biradiatum Meyen. 

 Polyedrium 



caudatum Lagerh. = Tetraedron caudatum Hansg. 



enorme De Bary = Tetraedron enorme Hansg. 



gigas Wittr. = Tetraedron gigas Hansg. 



lobulatum Ndg. = Tetraedron lobulatum Hafisg. 



longispinum Babh. = Cerasterias longispina Beinsch. 



minimum A.Br. = Tetraedron minimum Hansg. 



tetraedrieum Niig. = Tetraedron regulare Kiltz. 



tetragonum Ndg. = Tetraedron tetragonum Hansg. 



trigonum Ndg. = Tetraedron trigonum Hansg. 

 Prolifera 



rivularis Vaucli. = Cladopbora insignis Kiitz. 

 Protococcus 



angulosus Corda = Pleurococcus angulosus Menegh. 



coccoma Kiitz. = Botrydium granulatum Cfrev. 



infusionum Kirchn. = Gloeoeystis infusionum W. d G. S. West. 



minor Kiltz. = Pleurococcus vulgaris Menegh. 



nivalis Ag. = Sphaerella lacustris Wittr. 



tectorum Kiitz. = Pleurococcus tectorum Trevis. 



viridis Ag. = Pleurococcus vulgaris Menegh. 



vulgaris Menegh. = Pleurococcus vulgaris Menegh. 

 Ehaphidium 



aciculare A. Br. = Ankistrodesmus falcatus Balfs. 



contortum Thur. = Ankistrodesmus falcatus Balfs. 



convolutum Babh. = Ankistrodesmus convolutus G, S. West. 



falcatum Corda = Ankistrodesmus falcatus Balfs. 



fusiforme Corda = Ankistrodesmus falcatus Balfs. 



longissimum Schroder = Closteriopsis longissima Lemm. 



polymorphum Fresen. = Ankistrodesmus falcatus Balfs. 



[2C*1 



