AND ITS NEIGHBOURHOOD.
25
Ectocarpus littoralis, L. Walton, 1845.
Bostrychia scorpioides, Gm. On the lower part of stems
of Spartina stricta, Wivenhoe, 1873.
Polysiphonia atrorubescens, Dillw. Essex coast.
P. byssoides, Good. Walton, 1845.
Corallina officinalis, L. Walton, 1867.
Jania rubens, L. Harwich, 1876.
Nitophyllum laceratum, Grev. Walton, 1867.
Plocamium coccineum, Huds. Walton, 1845.
Rhodymenia ciliata, L. Walton, 1845.
R. palmata, L. Harwich, 1876.
Gracilaria confervoides, L. Walton and Harwich, 1867.
Chondrus crispus, L. Southend, 1864.
Polyides rotundus, Gmel. Walton, 1845.
Furcellaria fastigiata, Huds. Walton, 1845.
Ceramium rubrum, Huds. Maldon, 1844. Walton, 1867.
Harwich, 1880.
Griffithsia setacea, Ell. Walton, 1867.
Cladophora rupestris, L. Southend, 1844.
C. laetevirens, Dill. Walton, 1845.
Conferva litorea, Harv. Walton, 1873.
C. linum, Roth. Southend, 1844.
Enteromorpha intestinalis, L. Blackwater River, 1844.
Maldon, 1868.
E. compressa, L. Walton, 1845.
E. erecta, Lyngb. Wivenhoe, 1875.
E. clathrata, Roth. Wivenhoe, 1873. Maldon.
E. percursa, Ag. Maldon, 1868. Wivenhoe, 1873. Mist-
ley, 1880.
Ulva latissima, L. Maldon, 1884. Harwich.
Porphyra laciniata, Light. Maldon, 1867.
P. vulgaris, Ag. Southend, 1844.
FRESH-WATER ALGAE.
Vaucheria dillwynii, Ag. Kelvedon, 1850.
V. repens, Hass. Kelvedon, 1850.
V. hamata, Vauch. Kelvedon, 1850.
V. terrestris, Vauch. Kelvedon, 1850.
V. aversa, Hass. Kelvedon, 1850.
V. ornithocephala, Ag. Kelvedon, 1850.