d88 Notes on the Mavme Ahjoe uf Berwich-on-Tiveed. 



278 (specimen Mediterranea). Rahenh. Alg. Sachs No. 900 (speci- 

 men Adriatica) nou Earv. nee Crouan. Le JoUs Liste, p. 100. 

 Berwick Bay. Eather rare. 



15. Calithamnion roseum. {Roth.) Ilarv. Phyc. Brit. pi. 230. J. 

 Ag. Spec. Alg. II. p. 36. Crouan, Alg. Finist, No. 135. Le Jol. 

 Alg. Mar. Cherb. No. 162. Conferva rosea, Roth. Cat. II. (non 

 Cat. III.) Phlebothamnion roseum, Kt%. Spec. Alg. p. 653? 



Berwick Bay. Eare. This plant grows at extreme low water 

 mark at the mouth of the river Tweed, it is very seldom left 

 exposed by the receding tide and then only for a short time. 

 All the specimens I have found have been parasitical either on 

 Cladophora rupestris or Ceramium Beslongchampsii. 



16. Calithamnion granulatwn. {Ductuz.) Ag. J. Ag. Spec. Alg. 

 II. p. 61. (7ro?<«!w, Alg. Finist, No. 155. Ze Jo/. Alg. Mar. Cherb. 

 No. 62. Rahenh. Alg. Eur. No. 1398. Calith. spongiosum, 

 Earv. Phyc. Brit. pi. 125. Lloijd, Alg. de I'Oaest, No. 67. Phle- 

 bothamnion granulatum et spongiosum, Kt%. Spec. Alg. p. 658. 



Burnmouth at extreme low- water mai-k. Very rare. 



17. Ceramium Beslongchampsii. {Chauv.) Alg. Norm. No. 85. 

 Harv. Phyc. Brit. pi. 219. J. Ag. Spec. Alg. II. p. 122. Crouan, 

 Alg. Finist. No. 169. Lloyd, Alg. de I'Ouest, No. 238 !— Gongro- 

 ceras Deslongchampsii, Ktz. Spec. Alg. No. 677. 



Berwick at the mouth of the river Tweed at extreme low-water 

 mark. Rare. Found in company with Calithamnion roseum, and 

 like that species only uncovered at very low tides. 



18. Ceramium strictum. {Ktz.) Harv. Phyc. Brit. pi. 334. J. 

 Ag. Spec. Alg. II. p. 123. Crouan, Alg. Finist. No. 170. Gon- 

 groceras strictum, Ktz. Spec. Alg. p. 678. 



Burnmouth, Berwick, &c. Eare. 



Ceramium Deslongchampsii has been recorded by Mr G. Brady 

 in his Catalogue of Northumberland and Durham Marine Algae, 

 but not from the northern side of the Tweed. 



I have omitted from this list several species which appear new to 

 Berwick owing to their identity being at present a little uncertain. 

 Most of the synonyms and references used in this list are taken 

 either from Crouan's " Florule du Finistere " or the " Liste des 

 Algues Marines de Cherbourg" by M. Auguste Le Jolis. 



In last years " Proceedings" page 354 line 15 from the bottom 

 "Thamnidion" should be Thamnidimn ; on plate viii. " Phlce- 

 spora" should be Phlceospora; on plate x. "Thamnidion" should 

 be Thamnidium. 



