764 
r. PARASITICA. (Sm.) Ormesby Broad. 
r. PARASITICA. (Sm.) var. constricta. Grun. Ormesby Broad. 
F. PARASITICA var. trigona. Grmi. =^Triceratium exigmim. {^m.) 
Ormesby Broad. This curious little form was discovered by 
H. G. Glasspoole, Esq., of Ormesby, in 1843, and may still 
be found in the same locality, which is, I believe, its only 
known habitat. 
F. TENUICOLLIS. (Heiberg.) Ormesby Broad. 
T. YiRESCENS. (Kalfs.) Heigham, Whissonsett, Horning. 
Genus Campylosira Grunow. 
C. CYMBELLiFORMis. (Scliuiidt.) Stoiuachs of Hoctilucu), Yarmouth. 
Genus Licmophora Agardh. 
L. ABBRBViATA. (Kg.) Attached to Seaweed growing on a buoy 
at Scratby. 
L. Ehrenbergii. (Kg.) Growing on Ceramiim rulrum, Cromer. 
Genus Diatoma Decandolle. 
D. elongatum. (Ag.) Korwich water supply (see note to 
Asterionella). 
D. GRANDE. (Sm.) Ormesby ditches running into the Broad. 
B). VULGARE. (Ag.) Poringland. 
Genus Denticula Kiitzing. 
D. Kutzingii (Grun.) var. major. Ormesby, Horning. 
Family VIE— TABELLAPtlEHT 
Genus Tabellaria Ehronberg. 
T. FENESTRATA. (Kg.) Ormesby. 
r. FLOCCULOSA. (Dillwyn.) Ormesby, Horning, Hickling, Heigham. 
Genus Grammatophora Ehrenberg. 
G. marina. (Kg.) Scratby, growing on Algre ; Cromer, ditto. 
G. SERPENTINA. (Kg.) Ci’omer ; sand-washings, Hunstanton. 
Genus Striatella Agardh. 
S. UNIPUNCTATA. Ag. Growing on Algie in tide-pools, Cromer. 
