THE FRESH-WATER ALGAE OF ESSEX.
177
C. flavescens, Ag. Cooke, t. 55, f. 5. In ditches, Epping.
C. fracta, Dillw. Cooke, t. 55, f. 1. In ditches, High
Beach.
OEDOGONIACEAE.
OEdogonium vernale, Hass. Cooke, t. 58, f. 6, In ponds,
Waltham Abbey; High Beach (A.H.H.).
OE. paludosum, Hass. Cooke, t. 59, f. 2. In bogs, Kel-
vedon (E.G.V.).
OE. rothii, Le Clere. Cooke, t. 59, f. 6. In ponds, Kelvedon
(E.G.V.).
OE. pluviale, Nord. Cooke, t. 59, f. 8. In pools, Waltham-
stow.
OE. flavescens, Hass. Cooke, t. 60, f. 2. In ponds, Riven-
hall (E.G.V.).
OE. crassiusculum, Wittr. Cooke, t. 60, f. 5. In pools,
Epping Forest, Loughton Side.
OE. capillare, Linn. Cooke, t. 62, f. 3. In pools, Wal-
thamstow.
OE. boscii, Clerc. Cooke, t. 63, f. 4. In pools, Walthamstow.
OE. hexagonum, Kutz. Cooke, t. 66, f. 8. In ponds, etc.,
Kelvedon ; Tiptree (E.G.V.).
OE. fasciatum, Kutz. Cooke, t. 66, f. 2. In streams, Kel-
vedon (E.G.V.).
OE. longatum, Kutz. Cooke, t. 64, f. 4. Parasitic on other
species, Epping Forest.
OE. sphaericum, Hass., t. 53, f, 5. In pools, Kelvedon
(E.G.V.).
Bulbochaete setigera, Ag. Cooke, t. 48, f. 1. In ponds,
Kelvedon (E.G.V.); Snaresbrook.
[Vesiculifera mulleri, Hass., t. 53, f. 10. In pools, Kel-
vedon (E.G.V.).]
ULOTRICHACEAE.
Hormiscia zonata, W. and M. Cooke, t. 69. In ditches,
Braxted (E.G.V.); Walthamstow.
Ulothrix tenuis, Kutz. Cooke, t. 70, f. 6. In ditches,
Snaresbrook.
U. tenerrima, Kutz. Cooke, t. 70, f. 5. In ditches, Snares-
brook.
U. radicans, Kutz. Cooke, t. 71, f. 1. On the ground,
Kelvedon (E.G.V.).
N