THE ALGA-FLORA OF CAMBRIDGESHIRE. 297 
380. C. Sorza (Bréb.) W. Sm. 2. Dernford Fen, 1 mile 8. of 
Shelford. 8. Ditch, St. John’s College ‘backs,’ Sheep’s Green, 
and Barton Road, Cambridge ; rales Toft; Orwell; Wim- 
pole Park; as "Bridge. 4. H 5. Burwell Wicken Fen; 
For dham ; Chippenham Fen. 6. are Ely. . The Washes, 
Sutton, and Sutton West Fen. 
381. Surmerua siserrata Bréb. 2. Shelford. 8. Sheep's 
Green, Cambridge. 5. Chippenham Fen 
. 8. tingaris W. Sm. 38. Sirens Green, Cambridge. 5. 
Wicken Fen ; Chippenham Fen. 
383. S. rosusta Ehrenb. Syn. S. nobilis W.Sm. Var. spLENDIDA 
ooh Se Heurck. Syn. 8. splendida (Ehrenb.) Kiitz. 5. 
Burwel 
ae iy ovatis Bréb. 38. be ase Park. e bits 
Var. ancusta (Kiitz.) Van Heu Syn ae ‘Kitz. ; 8. 
spit ea! Sm. 3. Ditch, St. Jen’ ® College Ee es Cambridge. 
. Sutton West Fen. 
Var. prnnata (W. Sm.) Van Heurck. aia = pinnata W. Sm. 
3. Coton; ties Wimpole Par 
Var a (Bréb.) Van He urck, Sie r% sea Bréb. 3 
Ditch, St J Sohn s ee es bess Cambridge ; Wimpole Park. 
ata (Kiitz.) Van Heurck. Syn. S. ovata Kita. 8. Sutton. 
Glee PYLODISCUS HIBERNICUS ht. Syn. C. costatus W. Sm. 
5. Wieken Fen; Chippenham Fen. 
Fam. Nirzscuex. 
386. ag er ampuioxys (Khrenb.) Grun. Syn. Nitzschia 
amphioxys (Ehrenb.) W. Sm. 38. Ditch, St. John’s College ‘backs, 
Cambridge ; ep rre Wimpole Park. 4. Histon. 5. Chip- 
penham Fen. 
887. Nirzscu1a Tare Hantzsch. Syn. Tryblionella gra- 
cilis W. Sm. 8. Wimpole Park. 4. Histon. 5. Wicken Fen. 
Var. Levivensis (W. Sm.) Van Heurck. Syn. Tryblionella levi- 
ee W. Sm. 7. Sutton West Fen 
. N. constricta (Kiitz.) Ralfs. Syn. bi dubia W. Sm. 8. 
Wingol Park; Orwell. 5, Burwell; Fordh 
. N. acuminata (W.Sm.)Grun. Syn. Tr aiitenaile acuminata 
W. Sm. 8. Ditch, St. Ug poe - ali ’’ and Sheep’s Green, 
Cambridge ; onsite pole ‘Park. 
390. N. wi &b.) Grun. Syn. Surirella circumsuta 
Bail. ; Tryblionella Benielin W. Sm. 5. Chippenham Fen 
891. N. commutata Grun. 4. Histon. 6. Sutton. 
. N. Denticuta Grun. Syn. Denticula obtusa W. Sm. 5. 
Fordham. 6. Near Ely. 
8938. N. SINUATA ( ab Sm.)Grun. Syn. Denticula sinuata W. Sma. 
5. Chipeniar F 
N. pIssipaTAa (Kit) Grun. Syn. N. minutissina W. Sm. 
3. Sheep s Green, Cambridge 
