THE ALGA-FLORA OF CAMBRIDGESHIRE. 928 
Subfam. GiaocystDER. 
Nepurocytium tunatum West. 2. Dernford Fen, 1 mile 
S. a Shelford 6. Roswell Pits, Ely: fairly abundant, Aug. 1895, 
and July, 1898.  Distrib.—Westmoreland! Yorkshire ! Surrey ! 
N. Ireland! Paraguay. 
197. N. Nacenm om 5. Chippenham Fen; Wicken Fen. 
6. aye Pits, Ely. 7. Ponds 8. of March. 
N. opesum ae 5. se. haba Fen. Distrib.—Cum- 
beta Brazil. Paragua 
thickened at the sides; long. cell. 47 »; lat. cell. 27». The other 
was a large form with a very thick integument; long. cell. 49 p; 
lat. cell. 88 w; integ. 126 » x 104 ee crass. ining 10 
199. Oocystis sourraria Witt . Chippenham Fen; Wicken 
Fen. 8. mia in tata ; Tecciy: foot River, between March 
and Guyhirn 
200. O. parva West & G.S. West, 8. Guyhirne. This species 
not having yet been figured, I give some illustrations taken from 
Yo gy pidbbiede (Pl. 394, figs. 14-17). 
Laocystis Gicas (Kiitz.) Lagerh. Syn. Chlorococcum 
pos : ine )G ; Gleocystis ampla (Kiitz.) Rabenh. 5. Wicken 
Mah Chinpealbagm Fen. 6. Roswell Pits, ly. 7. Ponds §. of 
. G. vestcunosa Nag. 2. Dernford Fen, 1 mile S. of Shel- 
ford. 4 oe uylirne, in ditches 
203. G. INFUSIONA (Schrank) West & G. 5. West. Syn. Chloro- 
coccum ing (Schrank) Menegh. 5. In ditches, Burwell Load; 
204. G. recuntaris West & G. 8. West. Syn. Chlorococcum 
— West. 5. Wicken eb in peaty pools. 
cco instenis (Hass.) Kitz. Syn. Chroococcus maero- 
coccus Reheat . Chippenham Fen. 
Subfam. Prorococcacuz. 
206. SricHococcus BACILLARIS and 8. On old wood and 
damp pa nol uncommon about Casita! Orwell, on damp 
pcmer and w 
Prevrococcus vunearis Menegh. Abundant in most 
oats, and vey HBaely developed on some of the hedges 
P. rurescens (Kiitz.) Bréb. 1. Very fine ona ek spout, 
Camby mene ; 
s De Wildem. 2. Dernford Fen, 1 mile 8. of 
Shelford Sr reel te leaves of Nuphar luteum. 5. Wicken Fen, 
attached to leaves of Nymphaea alba. ae 
210. Trocuiscra nits (Reinsch) Hansg. 1. Forming dark green 
masses on damp ground a the wes of trees, Cambridge, along with 
Stichococcus baciliaris Nag. 
