WEST : NOTES ON THE FRESH-WATER ALG&. 219 
Fragilaria capucina Desmaz. ‘Tickton; near Meaux Abbey ; 
Newsholme ; Beverley ; Loftsome Bridge near Wressle. 
Diatoma vulgare Bory. Loftsome Bridge near Wressle. 
Diatoma elongatum Ag. Beverley; Newsholme; Loftsome 
Bridge near Wressle. 
Synedra pulchella Kiitz. Tickton; Loftsome Bridge near 
Wressle ; Beverley ; Riccall Common. 
Synedra enitiutissiinn Kiitz. ?; Sm. Diat. I. fig. 87. Newsholme. 
Synedra Vaucheriz Kiitz. Newsholme. 
Synedra Ulna Ehrnb. Loftsome Bridge near Wressle ; Beverley ; 
Waghen. 
Synedra splendens Kiitz. Beverley ; Routh. 
Synedra splendens Kiitz. var. equalis (Kiitz.) Rabh. _ Riccall 
Common. 
Synedra capitata Ehrnb. Beverley. 
Synedra Acus Kiitz. Loftsome Bridge near Wressle ; News- 
holme ; near Meaux Abbey. 
Tryblionella angustata Sm. Newsholme; Beverley. 
Nitzschia Amphioxys (Ehrnb.) Sm. Routh; near Meaux 
Abbey ; Waghen. 
Nitzschia_ constricta (Kiitz.) Pritch. Beverley; Loftsome 
Bridge near Wressle ; Tickton; Routh; near Meaux Abbey ; 
Waghen. 
Nitzschia parvula Sm. Riccall Common; Beverley; Waghen. 
Nitzschia sigmoidea (Nitzsch) Sm. Beverley ; Routh. 
Nitzschia curvula (Ehmb.) Sm. Routh; Beverley; Waghen. 
Nitzschia linearis (Ag.) Sm. Beverley; Tickton ; Routh ; near 
Meaux Abbey. 
Nitzschia tenuis Sm. Beverley ; Newsholme ; Loftsome per 
near Wressle ; Tickton; Routh. 
Nitzschiella Closterium (Ehrnb.) Rabb. Beverley. 
Nitzschiella acicularis (Kiitz.) Rabh. Routh ; near Sutton ; 
Beverley ; Loftsome Bridge near Wressle. 
Nitzschiella gracilis (Bréb.) Rab. (= Niteschia Tania Sm.). 
Waghen. 
Navicula cuspidata Kiitz. Riccall Common; Loftsome Bridge 
near Wressle. 
_Navicula limosa (Kiitz.) Grun. Beverley. 
Navicula inflata Kiitz. cae. asia. Beverley. 
Atos 
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