THE ALGA-FLORA OF CAMBRIDGESHIRE. 268 
228. L. ocuracea (Kiitz.) Thur. Syn. Leptothrix ochracea Kiitz. 
3. Sheep’s Green, Cambridge. 5. Chippenham Fen; Wicken Fen. 
Subfam. OscinLaTroriIoiwes. 
229. PHoRMIDIUM MOLLE eine ) Gomont. Syn. Anabena mollis 
Kits. 7. In ditches, Mar 
*230. P. Lurmum (Kiitz. ) ere Syn. oe lurida Kitz. ; 
Hypheothrix lurida Rabenh. 2. Dernford Fen, e S. of Shel- 
ford. 38. Coton. 5. Wicken Fen. 8. ncaa in sori 
*231. P. varpertanum (Delp.)Gomont. Syn. eed Valderia 
Delp. ; Hyphaothrix zonata (Ces.) Rabenh. 3. In ditch, Comberton, 
per to Cladophora crispata. 5. Chippenham Fen; Wicken Fen. 
. P. namryosum (Ag.) Gomont. Syn. Oscillatoria laminosa Ag. 
5. "Wiaken 
233. P. reENvE beri Ty Bike ye Syn. Anabena tenuis Menegh. 
3. Wimpole Park. 5. Wicken Fen. 7. In ditches, March. 
*934,. P. ancustissimum West & G. 8. West. 5. Wicken Fen, 
forming, with Phormidium Retzii ag. ) Gomont, a tortuose, intricate 
stratum. 
235. P. inunpatum Kiitz. Syn. Lyngbya inundata (Kitz.) Cooke. 
8. Guyhirne. 
236. P. Rer sah Se Gomont. Syn. Oscillatoria Retzii Ag. 
Ph ormidinon ripest Kitz. ; P. papyrinum Kiitz.; Lyngbya rupestris 
(Kiitz.) C . kas’ 8 — Cambridge. '5, Wicken 
*237, P. uncrnatum (Ag.) Gomont. Syn. Ouustire uncinata he 
2. Doric Fen, 1 mile 5. of Shelfor d. 38. Wimpole Park. 
8. P. avrumnae (Ag.) Gomont. Syn. Fediiccts autwmnnalis 
Ag.; O. antilaria Mertens; Phiciiiecs vulgare Kiitz.; Lyngbya 
vulgare (Kiitz.) Ki rchn. ; Oscillatoria subfusca Kiitz. 8. Barton 
near Cambridge.- ’ More or less frequent — Oambiidae on 
canis sandy ground, at the latter end of th ae 
. OscrtuaToRIA princers Vauch. Se R. Cam, Great 
Shelfo rd. 8. Ina a ch parallel to Burwell: Load; Wicken Fen. 
Crass. lege 24-26°5 
*240. O. PROBOSCIDEA Si acncirk 5. In a ditch parallel to Burwell 
ce tie trich. 13-14. Not previously recorded from Europe. 
41. O. umosa Ag. Syn. Oscillaria Frelichii pes 2. Shel- 
ford. 3. In a ditch, St. John’s College ‘‘backs,” Cambridge. 4. 
Histon. 5. Chippenham Fen. 6. Roswell Pits, Ely. 7. Near 
March. 
*242. O. ornata Kiitz. 5. oe Fen. Distrib.—France ; 
serreag Galicia; United Sta 
. O. irrieva Kiitz. 3. vo Sheep’s Green, Cambridge. 
5. eee ae Fen 
244. O. decolo tiie sp.n. QO. non in strato distineto sed inter 
alias Osciliatorias reperta ; “caiobiesalilre subrectis et brevibus, in- 
conspicue coloratis, apicibus non attenuatis nec capitatis (cellula 
