170 Proceedings of the Royal Irish Academi/. 



II. — DiATOSIACEAE — coTitiiiued. 

 Epithemia 



granulata Kiitz. = E. turgida Eiitz, 



longicornis Ekr. = E. Argus Eiits. 



rupestris W. Sm. = E. gibberula Kiitz. 

 Eonotia 



incisa Greg. = E, Veneris Eiitz. 

 Exilaria 



fasciculata Grev. = Synedra pulchella Eiitz. 

 Fragilaria 



aequalis Eeii>. = F. virescens Balfs. 



hiemalis Lyngh. = Diatoma hiemale Heib. 



mesolepta Babh. - F. capucina Desmaz. 



pectinalis L<jngh. = F. capucina Desiiiaz. 



rhabdosoma Ehr. =F. capucina Destnaz. 



undata H'. Stn. = F. virescens Balfs. 

 Frustulia 



fasciata Ag. = Synedra Ulna Ehr. 



neglecta Dc Toni = Navicula gracilis Kiitz- 



sasonica Rabh. = Navicula rhomboides Ehr. 



Ulna Eiitz. = Syneda Ulna Ehr. 



\'iridis Kiitz. = Na\ncula viridis Eiitz. 



vulgaris De Toni - Vanheurckia vulgaris H. Van Ecurck. 

 Gomphonema 



Cl&vuB Brib. = G. acuminatum Ehr. 



curvatum Kiitz. = Rhoicosphenia curvata Grtin. 



hebridense Greg. = G. Vibrio Ehr. 



minutissimum Grev. = G. exigunm Eiitz, 



minutum Ag. = G. dichotomum Eiitz. 



rostratum H'. Svi. = G. parvulum Kiitz. 

 Grammatophora 



balfouriana W. Sm. =■ Diatomella balfouriana Grev. 

 Himantidium 



arcus TF. Svi. = Eunotia Arena Ehr. 



bidens Ehr. = Eunotia praerupta Ehr. 



gracile Ehr. = Eunotia gracilis Rabh. 



majus W. Sm. = Eunotia major Rabh. 



pectinale Kiitz. = Eunotia pectinalis Rabh. 



Soleirolii Kiitz. = Eunotia Soleirolii Rabh. 



undulatum W. Sm. = Eunotia pectinalis Babh. 

 Navicula 



anglica Rolfs. = N. Placentnla Eiite. 



