AND ITS NF.ICHBOURHOOn. 25 



Ectocarpus littoralis, 1,. Walton, US45. 



Bostrychia scorpioides, dm. On the lower part of stems 

 o'i Spdr/iNd stricta, Wivenhoe, 1S73. 



Polysiphonia atrorubescens, Dillw. Essex coast. 



P. byssoides, (iood. \\'alton, 1845. 



CoralHna officinalis, L. Walton, 1867. 



Jania rubens, L. Harwich, 1876. 



Nitophyllum laceratum, Clrev. Walton, 1867. 



Plocamium coccineum, Hiuls. Walton, 1845. 



Rhodymenia ciliata, L. Walton, 1845. 



R. palmata, L. Harwich, 1876. 



Gracilaria confervoides, L. W^alton and Harwich, 1867. 



Chondrus crispus, L. Southend, 1864. 



Polyide'' rotundus, Gmel. Walton, 1845. 



Furcellaria fastigiata, Huds. Walton, 1845. 



Ceramium rubrum, Huds. IVIaldon, 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. linurri, Roth. Southend, 1844. 



Enteromorpha intesti, Talis, L. Blackwater River, 1844. 

 Maldon, 1868. 



E. compressa, L. Walton, 1845. 



E. erecta, Eyngb. Wivenhoe, 1875. 



E. clathrata, Roth. Wivenhoe, 1873. Maldon. 



E. percursa, Ag. Maldon, 1868. Wivenhoe, 1873. Mist- 

 Icy, 1880. 



Ulva latissima, E. Maldon, 1884. Harwich. 



Porphyra laciniata, Eight. Maldon, 1867. 



P. vulgaris, Ag. Southend, 1844. 



FRESH-WATER AEG^'. 



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. 



