1 72 Proceedings of the Royal Irish Academy. 



II. — DiATOMACEAE — continucd. 

 Piimulana 



acuminata TT. Sm. = Navicula acuminata W. Sm. 



acuta W. Sm. = Navicula radiosa Eiitz. 



alpina TV. Sm. = Navicula alpina Ralfs. 



borealis Ehr. = Navicula borealis Kiltz. 



Brebissonii Eabh. = Navicula Brebissonii Kutz. 



cardinalis Ehr. = Navicula cardinalis Ehr. 



divergens W. Sm. = Navicula divergens Balfs. 



gibba Ehr. - Navicula gibba Riitz. 



bemiptera Rabh. = Navicula hemiptera Kiitz. 



interrupta TF. Sm. = Navicula mesolepta Ehr. 



latestriata Greg. = Navicula borealis Kiitz. 



major Eabh. = Navicula major Kiitz. 



mesolepta fl'. Sm. = Navicula mesolepta Ehr. 



nobilis Ehr. = Navicula nobilis Kiitz. 



nodosa H'. Sm. = Navicula Legumen Ehr. 



oblonga Rabh. = Navicnla oblonga Kiitz. 



RabenLorstii Ralfs. = Navicula Rabenborstii Ralfs. 



radiosa Rabh. = Navicula radiosa Kutz. 



stauroneiformis W. Sm. = Navicula Brebissonii Kiitz. 



Tabellaria Ehr. = Navicula Tabellaria Kiitz. 



viridis W. Sm. = Navicula viridis Kiitz. 

 Pleurosigma 



attenuatum TF. Sm. = Gjrosigma attenuatum Rabh. 



Spencerii TF. Sm, = Gyrosigma Spencerii 0. K. 

 Pleurosigma 



Legumen Rabh. = Stauroneis Legumen Ehr. 

 Raphoneis 



Harrisonii ir. Sm. = Odontidium Harrisonii TF. Sm. 

 Stauroneis 



amphicepbala Kiitz. = S. anceps Ehr. 



linearis Ehr. = S. anceps Ehr. 



punctata Kiitz. = Navicula Tascula Ehr. 

 Surirella 



angusta Kutz. = S. ovalia Br6b. 



Brightwellii H'. Sm. = S. ovalis Brib. 



Craticula Ehr. = Navicula sp. 



crumena Brib. = S. ovalis Brib. 



nobilis TF. Sm. = S. robusta Ehr. 



ovata Kiitz. = 8. ovalis Brib. 



panduriformis fV. Sm. - 8. ovalis Brib. 



