Marine Algce of Berwick-ov -Tweed. 273 



Family— E ctocarpacese. 



MYEIOTEICHIA, Harv. 



Myriotrichia clav^eformis, Harv. 



in Hook., Journ. Bot., vol. i., p. 300, t. 138. 



F. TYPICA. 



Descr. Myriotrichia clavseformis, Harv., I.e. 

 Fig. „ „ Harv., Phyc. Brit., pi. 101. 



Exsicc. „ ,, Wyatt, Alg. Danmon., no. 131. 



Syn. „ „ J. Ag., Spec. Alg. i., p. 13 ; Ktz., Spec. 



Alg., p. 470. 

 Myriotrichia Harveyana, Nrsg., (partim.) 



F. FILIFORMIS. 



Descr. Myriotrichia filiformis, Harv., Phyc. Brit. 

 Fig. „ ., Harv., I.e. pi. 156. 



Exsicc. „ „ Wyatt, Alg. Danmon., no. 213 ; Le Jol., 



Alg. Mar. Cherb., nos. 153 et 214 ; Rabenh., Alg. Eur., no. 1517 ; 

 Crouan, Alg. Finist., no. 12. 

 Syn. Myriotrichia filiformis, J. Ag., Spec. Alg. i., p. 14 ; Ktz., Spec. Alg. 

 p. 470; Le Jol., Liste, p. 74. 

 Myriotrichia Harveyana, Nceg., (partim.) 

 Hah. On various Alga? especially Sn/tosiphon Imnewtarius. May — Sept. 

 Not uncommon. Berwick Bay, Sharper Head, Bnrnmouth, 

 Holy Island. 

 Nsegeli has shown in "Die neuern Algensysteme" that the two 

 species of Phycologia Britannica are merely forms of a single 

 species. The variety filiformis is rather more abundant than the 

 typical form, but both varieties are frequently found growing 

 together on the same host plant. 



STREBLONEMA, Derb. and Sol. 



Streblonema fasciculatttm, Thur. 



in Le Jol., Liste Alg. Mar. Cherb., p. 73. 

 Descr. Streblonema fasciculatum, Hauck, Meeresalg., pp. 323, 324. 

 Exsicc. „ „ Le Jol, Alg. Mar. Cherb., no. 100. 



Fig. „ „ Hauck, Meeresalg., fig. 133. 



Syn. Streblonema volubilis, Pringsh., (non Thur.) Beitr. z. Morph. d. 



Meeresalg., p. 13, t. 3, fig. b. 

 Nab. Parasitic in the fronds of Caxtagnea virescens, June and .Inly. 

 Bare. Berwick Bay. 



