WEST: ADDITIONS TO FRESHWATER ALG#. 249 
Melosira varians Greg. Holden Gill, near Keighley; Peel 
Park, Bradford ; Manningham Park. 
Surirella linearis Sm. Greetland near Halifax. 
Surirella panduriformis Sm. Allerton. 
*Surirella ovalis Bréb. Saltaire ; Goole. 
Surirella ovata Turp. Bingley. 
Surirella minuta Bréb. Baildon; Bingley; Goole. 
Surirella pinnata Sm. Bingley; Adel Bog. 
Cymatopleura solea Sm. Moughton Fell; Penyghent ; 
Whernside. 
*Epithemia sorex Kiitz. Malham Tarn. 
seas gibba (Ehrnb.) Kiitz. Baildon; Adel Bog ; Molbent 
eed ventricosa Kiitz. Moughton Fell. 
Himantidium arcus Sm. Penyghent. 
Himantidium undulatum Sm. Whernside. 
Himantidium gracile Ehrnb.  Kildwick ; Greetland near 
Halifax. 
Ceratoneis arcus (Ehrnb.) Kiitz. Whernside; Holden Gill 
near Keighley. 
*Ceratoneis amphioxys Rabh. Calfbeck, Howgill Fells. 
Cymbella cuspidata Kiitz. Adel Bog; Rombalds Moor; 
Greetland near Halifax. 
Cocconema lanceolatum Ehrnb. Moughton Fell; Baildon; 
Holden Gill near Keighley. 
Cocconema cymbiforme (Kiitz.) Ehrnb. Moughton Fell ; 
Baildon ; Woolley. 
ing cistula Hempr. Moughton Fell; Peel Park, 
Bradford ; Manningham Park. 
Cocconema parvum Sm. Baildon; Peel Park, Bradford; 
Bingley. 
Encyonema prostratum (Berk.) Ralfs. Moughton Fell; 
Peel Park, Bradford ; Horton near Bradford. 
Encyonema phesttosiih Kiitz. Allerton; Malham Tarn ; 
Rombalds’ Moor; Manningham Park ; Paces: ; Mirfield ; 
Horton near Bradford. 
*Encyonema gracile Rabh. Cullingworth. 
Amphora ovalis Kiitz. Doncaster; Moughton Fell. 
Cocconeis pediculus Ehrnb. Abundant on Cladophora 
__glomerata. Holden Gill near Keighley. 
August 1 1897. 
