338 GUERNSEY. 
Pinnularia major, Rab. 
Common at Grande Mare and in the Cobo peat. 
Pinnularia Tabellaria, Ehr. 
Pinnularia acrosphaeria, Rab. 
Saints Bay Valley and Casrouge Valley, frequent. 
Pinnularia viridis, Rab. 
Generally distributed and common. 
Pinnularia hemiptera, Rab. 
Pinnularia oblonga, Rab. 
Grande Mare pools, common. 
Pinnularia peregrina, Ehr. 
Abundant in the marsh near Vazon Bay. Pulias pool, common. 
Salerie, frequent. 
Pinnularia radiosa, Rab. 
Frequent in the Cobo peat deposit. 
Pinnularia viridula, Rab. 
Generally distributed and common. 
Pinnularia gracilis, Sm. 
Marsh between Grande Mare and Vazon Bay, in abundance. 
Pinnularia borealis, Ehr. 
Pinnularia acuminata, Sm. 
Pinnularia distans, Sm. 
More or less common all round the coast. 
Pinnularia Cyprinus, Sm. (P. Mormani, Rab.) 
Brackish pool at Pulias, abundant. 
Pinnularia acuta, Sm. 
Grande Mare, common. 
Pinnularia longa, Greg. 
Two specimens in a Cobo gathering from low water. 
Pinnularia acutiuscula, Greg. 
Pinnularia Entomon, Ebr. 
One fine and perfect valve in a mixed gathering from Petit Bot 
Bay. 
Pinnularia interrupta, Sm. 
Abundant in a spring in the valley below Casrouge, Forest. 
