80 PLEUROSIGMA — TOXONIDEA 



Pleurosigma subrigidum Grun. 

 Rhoicosigma mediterraneum Clève. 



— robustum Grun. 



— Reichardti Grun. 

 Surirella fastuosa Ehrb., var. lepida Grun. 



— fastuosa, var. subcuneata Grun. 



— fastuosa, var. panduriformis Grun. 



— japonica A. Schm. 



— intercedensGRUN. 



— Baldjickii Norm. 



— lata Sm. 

 Campylodiscus mediterraneus Grun. 



— limbatus Breb. 



— adriaticus Grun. 



— Lorenzianus Grun. 



— Ralfsii Sm. 



— balearious Clève. 



— Thuretii Breb. 



-— subangularis Schmn. Atl. 18, fig. 3 et 6. 



Nitzschia marginulata Grun. 



— ocellata Clève. 



— panduriformis Greg. 



— lata WiTT. 



— angularis Greg. 



— guarnerensis Grun. 

 spathulata Bréb. 



— Smithii Ralf. 



insignis Greg., var. mediterranea Grun. 



— insignis, var. spatulifera Grun. 



— fiuminensis Grun. 



— Sigma, Sm. , var. intercedens Grun. 



— Sigma, var. consimilis Grun. 



— valida Clève et Grun. 



— punctata Sm. var. elongata Grun. 



— punctata, var. ? coarctata Grun. 

 angustata Sm., var. marina Grun. 



Toxonidea balearica Clève. 



