Notes on the Marine A IgcB of Berwich-on-Tiueed. 537 



Oq the sands crossing to Holy Island usually mixed with 

 species of conferva, &c. Very rare. 



9. JEctocarpus crinitus, (Carm.) Hook. Brit. Fl. JETarv. Phyc. 

 Brit. pi. 330. J. Acj. Sp. 



Scremerston. Very rare. 



I was fortunate enough to find this rare species near Scremer- 

 ston in the autumn of last year. The specimens which were 

 well fruited were hardly an inch long and covered the rocks near 

 high water mark. 

 10. Machista Areschougii. Cm. Liste des Alg. Mar. Fl. de Finist. 

 p. 160. Gen. 157. 



Barnmouth, Berwick, and Scremerston. Very rare. Always 

 parasitical on the thongs of Rimanthalia lorca. 



This very minute parasite is new to Britain. I first found it 

 at Dunbar in the summer of last year, and have since found it 

 on several occasions near Berwick. 



11. Dictyosiphon mesogloia. Aresch. Obs, Phyc. III. p. 33. Exs. 

 No. 106. 



The sands crossing to Holy Island about midway across. 

 Hare. E. M. Holmes. 



This also is one of the newer British Algse. Mr Holmes 

 remarks of it "i). Mesogloia has probably been mistaken in the 

 North of England and Scotland for Mesogloia virescens from which 

 it is only distinguishable when seen growing by the acute apices 

 of the fronds." Greviilea, vol. XI. p. 142. The microscopical 

 characters of B. Mesogloia and Mesogloia virescens are however 

 very different. 



12. Aglaozoma parvula, (Grev.) Zanard; Kutz, Sp. Alg. p. 566. 

 Zonaria parvula, Grev. J. Ag. Spec. Alg. I. p. 107. Sarv. Phy. 

 Brit. pi. 341 . Aglaozonia reptans, Ktz. Spec. Alg. p. 566. Cm. Fl. 

 de Finist. p. 169, Gen. 182. Zonaria reptans, Cm. Alg. Finist. 

 No. 74. 



Berwick Bay on the stems of Laminaria Cloustoni. Very rare. 



13. Dermocarpa prasina. Bornet, Notes Algologiques II. p. 76. 

 t. 26. fig. 6-9. 



Parasitical on Catanella opuntia, Berwick Bay. Eare. Mr 

 Holmes in "Greviilea" vol. XI. remarks that Turner seems to 

 have mistaken this species for the fruit of Catanella. 



14. Porphyra leiicosticta. Thur. MS. Le Jol. Alg. Mar. Cherb. 

 No. 156. P. laciniata, Cm. Alg. Finist, No. 397, (Non Ag.) P. 

 vulgaris, Lloyd, Alg. de I'Ouest, No. 7. Erbario critto, Hal. No. 



2p 



