te; tej tg; fe; 
746 
Transactions of the Society. 
S. biceps Kiitz. Frequent. 
S. pulchella Kiitz. 13., H., Kirk Fell, near Cockermouth, 
Derwent Water. 
S. Ulna Ehrnb. H., Bn , Ambleside, Deepdale, Dubb’s Moss, 
Bassentb waite Water. 
S. splendens Kiitz. Common. 
S. Acus Kiitz. B., L., Tkrelkeld, Esthwaite Water, Stye Head 
Tarn. 
S. delicatissima Sm. B. 
Genus Asterionella Hass. 
A. formosa Hass. Bo., L., H. (at 2100 ft.), Deepdale, Bassen- 
th waite Water. 
Genus Amphipleura Kiitz. 
A. pellucida Kiitz. Bn. 
Genus Nitzschia Hass. 
Amphioxys (Ehrnb.) Sm. H , Cockermouth. 
constricta (Kiitz.) Pritch. ( N . dubia Sm.). Bn. 
parvula Sm. Bn., Scawfell. 
sigmoidea (Nitzsch.) Sm. Bn., Derwent Water. 
curvula (Ehrnb.) Sm. Very frequent. 
linearis (Ag.) Sm. H., Bn., B., W., Deepdale, near Cocker- 
mouth. 
tenuis Sm. B., Bn., Crummock Water, near Cockermouth. 
Genus Nitzschiella Rabh. 
acicularis (Kiitz.) Rabh. Bn. 
Genus Navicula Bory. 
cuspidata Kiitz. B., Ennerdale, Crummock Water, Dubb’s 
Moss. 
rhomboides Ehrnb. Very frequent. 
serians (Breb.) Kiitz. L., C., Angle Tarn, Scawfell. 
elliptica Kiitz. (N. ovalis Sm.). Bo., Bn., L., B., Hk., Deep- 
dale. 
pygmsea Kiitz. (N. minutula Sm.). Bn. 
limosa (Kiitz.) Grun. L. 
amphisbsena Bory. Bo., Bn., C., Bassenth waite Water. 
sphserophora Kiitz. Near Cockermouth. 
pusilla Sm. Bo. 
rhynchocephala Kiitz. Bo., Bn., near Cockermouth, Bassen- 
th waite Water. 
affinis Ehrnb. B., Bn., H. (at 2400 ft.). 
jirma Kiitz. Bn., oommon. Seen with auxospores. 
Amphirhynchus Ehrnb. Bn., C., Bassenth waite Water, Kirk 
Fell. 
