744 
Transactions of the Society . 
Genus Epithemia Breb. 
E. turgida (Ehrnb.) Kiitz. E, Bn., Crummock Water. 
E. Westermanni (Ehrnb.) Kiitz. H., C., Pike of Bliscoe. 
E. Hyndmanii Sm. Bn. 
E . Sorex Kiitz. Bn., B. 
E. gibba (Ehrnb.) Kiitz. Bn., B., L., Bt., Hk 
E. ventricosa Kiitz. Bt., C. 
E. Zebra (Ehrnb.) Kiitz. Bn., B. 
E . gibberula (Ehrnb.) Kiitz. var. rupestris (Sm.) Rabh. 
(E. rupestris Sm.), H., C. 
E. Argus (Ehrnb.) Kiitz. Bn., L,, Hk. 
E, alpestris Sm. Bn. 
Genus Eunotia Ehrnb. 
E. incisa Greg. Bn., Kirk Fell, Scawfell, 
E. diodon Ehrnb. H., Bn., Scawfell. 
E. triodon Ehrnb. H., Deepdale. 
E. tetraodon Ehrnb. H., Bn., 0., Brandreth. 
E. Arcus Ehrnb. Bt., Hp., B,, Kirk Fell, Easedale. 
E. majus Sm. H., Black Sail Pass. 
E. bidens Greg . B., C., Hk, 
E. gracilis Ehrnb. Very frequent. Occurs up to 2400 ft. on 
Helvellyn. 
E. pectinalis Dillw. W., H,, B,, Bn., C., Wythburn, Crummock 
Water. 
var. undulatum Ralfs. C., Pike of Bliscoe. 
Genus Ceratoneis Ehrnb. 
C. Arcus (Ehrnb.) Kiitz. Crummock Water. 
C. Amphioxys Rabh. W., Sk., R., Derwent Water, Bassen- 
th waite Water. 
Genus Cymbella Ag. 
G Ehrenbergii Kiitz. Bn., Hk., Bassenth waite Water. 
C. cuspidata Kiitz. Bt., C., Hk., Buttermere, Threlkeld, Dubb’s 
Moss. 
C. turgida Greg. W., B., Bn., H. (at 2400 ft.). 
G. gastroides Kiitz. B. 
C. Smithii Rabh. (C. helvetica Sm.). B. 
G. maculata Kiitz. B., Bn., near Cockermouth. 
G. ventricosa Ag. B. 
Genus Gocconema Ehrnb. 
G. lanceolatum Ehrnb. Frequent. 
G. cymbiforme (Kiitz.) Ehrnb. H., B., Bn., Derwent Water. 
G. Gistula Hempr. Very frequent. Occurs up to 2400 ft. on 
Helvellyn. 
G. parvum Sm. H., B., Threlkeld, Ennerdale, Scawfell, Stye 
Head Tarn. 
