2 
Transactions of the Society. 
fruitful locality in the New Forest was the bog between Lyndhurst 
and Christchurch, so well known to botanists as the habitat of the 
rare Spiranthes aestivalis. 
Very little work has been done with the Freshwater Algae of the 
South-west of England since the time of H assail, Ralfs, and Jenner. 
The only recent papers of importance with which I am acquainted are 
by Mr. E. D. Marquand, on “ The Desmids and Diatoms of West 
Cornwall,” and on “ The Freshwater Algae of the Land’s End 
District,” in the ‘ Transactions of the Penzance Natural History and 
Antiquarian Society ’ for 1882-3 and 1885-6 ; and by Mr. E. Parfitt 
on “ Devon Freshwater Algae,” in the ‘ Transactions of the Devonshire 
Association for the Advancement of Science, Literature, and Art ’ 
for 1886. As in previous papers, I have excluded diatoms from the 
list. Species for which I could find no previously recorded locality in 
these islands are printed in italics ; and new species or new varieties 
in small capitals. To the names of those desmids not previously 
recorded from the southern counties of England an * is prefixed. 
Protococcace^. 
Eremosphaera viridis DBy., H, D. 
Gloeocystis vesiculosa Nag., D. 
„ rupestris Rbh., D. 
Botryococcus Braunii Ktz., H. 
Rhaphidium falcatum Cke., H. 
Chlorococcum gigas Griin., H. 
Schizochlamys gelatinosa A. Br., D. 
Scenedesmus acutus Mey., H. 
„ obtusus, Mey., H, D. 
Glochiococcus insignis (De Ton.) Reinsch (Acanthococcus 
insignis Reinsch, Ber. Deutsch. Bot. Gesell., iv. 1886, pi. 
xii. f. 22), H. Fig. 1. 
This interesting organism was observed very rarely in bog-pools 
near Lyndhurst. It corresponds very closely with Reinsch’s descrip- 
tion and figure. The total diameter of the cell is about 67*5 //,. The 
cell- wall is exceedingly thick, as much as one-fourth the diameter of 
the cell, and consists of a large number of plicated layers, the cell- 
cavity filled with granular protoplasm and containing large chromato- 
phores. I have already recorded (Journ. R. Micr. Soc., 1888, p. 2, 
pi. i. f. 4) the occurrence in this country of a spiny species of this 
genus, which I have described as a new species under the name 
Acanthocladus anglicus mihi,* which may, however, be but a form 
of this. 
Characiace.®. 
Nephrocytiiim Nagelii Griin., Beaulieu, H. 
Note at the end of this paper. 
