196 Proceedings of the Royal Irish Academy. 



rV. — Phaeophyokae — continued. 

 Cystoseira 



foeniculacea Grev. = C. discors Ag. 

 Desmotriehum 



balticrtm Eiitz. - Punctaria baltica Batt. 



andalatam Rke. = Panctaria ondulata /. Ag. 

 Dichloria 



viridis Grev. = Desmarestia viridis Lamour. 

 Dictyopteris 



poh-podioides Lamour. = D. membranacea Batt. 

 Dictyota 



atomaria Grev. = Taonia atomaria J. Ag. 



implexa J. Ag. = D. dichotoma Lamour. 

 Ectocarpus 



brachiatus Harv. = Phloeospora bracbiata Born. 



orinitas Carm. - Acbinetospora pusilla Born. 



firmus ./. Ag. = Pylaiella littoralis Ejcllm. 



Griffithsianus Lc Jol. = Phloeospora bracbiata Bom. 



littoralis Wyatt = Pylaiella littoralis Kjellm. 



Mertensii Harv. = Tilopteris Mertensii Kiitz. 



pusillos Grijff. = Acbinetospora pusilla Bom. 



sphaerophorus Carm. = Isthmoplea sphaeropbora Kjellm. 

 Elachistea 



Areschougii Cm. = Myriactis Areschougii Batt. 

 Elaionema 



villosom Berk. = Arthrocladia villosa Duby. 

 Fucus 



acaleatas Linn. = Desmarestia aculeata Lamour. 



balticns Ag. = F. vesicalosns Linn. 



bifurcatus With. = Bifnrcaria tnberculata Slackh. 



canaliculatus Linn. = Pelvetia canaliculata Dene ct Thur. 



dlgitatas Linn. = Laminaria di^itata Lamour. 



disticbas Linn. = F. anceps Harv. and Ward. 



Fascia 3/S/J. = Pbyllitis Fascia Eutz. 



Filum Linn. - Chorda Filum Stackh. 



loreos Ltnn. = Himantbalia lorea Lyngb. 



Mackaii Turn. = Ascopbyllum Mackaii Holm, d Batt. 



nodosos Linn. = AscopbyUoiD nodosum Le Jol. 



Pbyllitis Stackh. = Laminaria saccharina Lamour. 



polyscbides Light/. = Soccorhiza polyscbides Ball. 



saccbarinus Linn. = Laminaria saccbarina Lamour. 



siliqnosus Linn. = Halidrys siliqnosa Lyngb. 



