THE ALGA-FLORA OF CAMBRIDGESHIRE. 299 
Fam. CoscrnopiscipE®. 
409. Coscrnopiscus Lacustris Grun. Syn. Cyelotella punctata 
W. Sm. 8. Wisbeach (W. Smith). 
P.S.—M r. H. D. Geldart, of Norwich, has kindly drawn my 
Sicha to a po pede extensive ‘‘ List of Norfolk Diatomacer ”’ 
y the late F. Kitton in Trans. Norf. & Norw. . Hist. Soe. 
antl iil, 386-354 ; (1884) iii, 754-770. This I had quite over- 
r. H. N. Dixon also writes from Northampton that he re- 
renee I coectihrid Batrachospermum moniliforme (Roth.) Ag. in-a 
ditch a erryhinton, and in springs at source of the brook at 
Talboums tiene the Fleam Dyke). This was in 1882. He thinks 
he also found it at Seven Barta! Shelford 
EXPLANATION OF PLATES. 
a, a' = Front view (a fronte visa). 
b = Vertical view (a vertice visa). 
z = Zoogonidangium. 
Prats 394.—Fig. 1, 2. Bulbochete ellipsospora, sp. n. x 260. 3-5. Gdo- 
gonium crassipellitum, sp.n. x 220. 6-9. Pilinia stagnalis, sp.n. x 220. 10,11. 
Radiofilum flavescens, sp.n. X 520. 12. conga protuberans Lund. forma, 
x 520. 13. C. angulosum Bréb. forma, x 520. 14-17. Oocystis parva West & 
G. 8. West, x 520. 18-22. Ophiocytium cochleare (Kichw.) A. Br. x 520. 
Prate 395.—Fig. 1-3. Spirogyra pellucida (Hass.) Kiitz. x 220. 
Mougeotia a , Sp. n. x 620. 7. aracium sp. x 520. 8. Eunotia 
pectinalis (Dillw.) Rabenh. x 520. 9. a limosa Kiitz., auxospore, x 520. 
fy Secs roseo-purpureus, sp.n. X - 11. Cosmarium Beckii Gutw. 
20. . C. costatum Nordst. x 520. 13-16. Scenedesmus acutiformis 
kt x 520. 
re 396.—Fig. 1, 2. Cl ium peracerosum Gay, eleg 
nein 62°C. cae Nordst. x 220, 4. Natashi Piven cbr 
De Bary, forma; a, x 220; a’, x 520. 5. P. Ehrenbergii v d v: 
. acced . 
pazilliferum, sp: n. x 520. 9. Closterium Jenneri Ralfs, var. robustum, var. n. 
x 520. 10. Staurastrum Avicula Bréb. forma, x 520. 11. Euastrum insulare 
(Wittr.) Roy, forma, x 520. 12, 13. Eunotia sp. x “740. 14. Synedra Acus 
(Kiitz.) Grun. var. x 740. 15, 16. Gomphonema intricatum Kiitz. var. Vibrio 
(Ehrenb.) Van Heurck. x 520 
