lO THE MARINE ALG/K OF ESSEX. 



PLOCAMIUM, Lyngb. 



Plocamium coccineum, Lyngb., " Hydroph. Dan.," p. 39. 

 {Fucoides rubens varie disseciion, Ray, "Synopsis," ed. 3, p. 37,' i). 

 " Observed by Mr. Dale^ in Maldon River over against Tolesbury, 

 Essex," Ray. Walton, 1845, E. G. Varenne ; Harwich and Felix- 

 stowe, G. P. Hope and G. Massee ; Clacton, E. A. B. Both the 

 broad and narrow varieties of this species are to be found on the 

 coast of Essex. 



Delesseriaceae, Schmitz. 

 NITOPHYLLUM, (Irev. 



Nitophyllum laceratum,** Grev., "Alg. Brit.," p. 83. Walton, 

 1867, E. G. Varenne; Felixstowe, G. P. Hope and G. Massee; 

 Clacton, E. A. B. 



DELESSERIA, Lamour. 



Delesseria alata, Lamour, " Ess.," p. 36. There is a speci- 

 men of this species in the Buddie Herbarium (" Herb. Sloane," vol. 

 114, p. 12, No. 3) with this inscription : " Fucus purpureus tenuiter 

 divisus non geniculatus. This was found on the coast of Mersea 

 Island in Essex." The other Essex localities are Harwich, G. P. 

 Hope ; Felixstowe, G. Massee ; Clacton, E. A. B. 



D. hypoglossum, Lamour, " Ess.," p. 36. Felixstowe and 

 Harwich, G. P. Hope and G. Massee. 



D. sinuosa, Lamour, "Ess," p. 124. Felixstowe, G. P. Hope. 



HYDROLAPATHUM, Stackh. 



Hydrolapathum sanguineum, Stackh., " Tentam.," p. 67. 

 Harwich, G. P. Hope. 



Rhodomelaceae, Schmitz. 



BOSTRYCHIA, Montg. 



Bostrychia scopioides, Montg., "Cuba. Bot. Crypt.," p. 

 39. "Shore of Blackwater at Maldon, Mr. E, Forster, '' Junior," 



7 The Mr. Dale here spoken of is probably the .Samuel Dale who died in 1739 (,vide Britten 

 and Boulger's " Biographical Index," p. 44). 



8 This species was described by Gmelin (" Hist. Fuc," p. 179) in 1768, from a specimen gathered 

 at Harwich (" Locus, Harvici supra lapides "). 



9 Edward Forster's Herbarium was purchased by Robert Brown and presented to the British 

 Museum. I have, therefore, been able to examine the original specimen mentioned by Greville. 

 It bears the inscription " Blackwater, nearly opposite Maldon, 1793." There is also another , 

 Essex specimen of this species in the Herbarium of the British Museum ; it was gathered in the 

 same locality by Mr. Bicheno, probably early in the present century. 



