200 Alga of the Eastern Borders. 



31. M. hemispharica. On rocks bedewed by the spray of the 

 burns; Howpark dean; Monynut Water ; side of theWhiteadder, 

 near The Retreat. It also occurs in Penmanshiel Moss, on the 

 sides of a few of the peat pits, near their base ; and also amongst 

 the mud, where the water is shallow. This and No. 28 are 

 additions to the Flora. 



32. Endocarpon miniatum. On rocks in the upper part of 

 Howpark dean. 



The Alga of the Eastern Borders. 



1. Pohjsiphonia parasitica. Berwick Bay, in the Narrow-Lane, 

 and on rocks in front of the Singing-Coves, Mrs. Gatty. 



2. Ceramium botryocarpum. Berwick Bay, Mrs. Gatty. 



3. Ectocarpus tomentosus. Berwick Bay, in front of the Sing- 

 ing-Coves, Mrs. Gatty. 



4. Ectocarpus granulosus. Berwick Bay, Mrs. Gatty. 



5. Ectocarpus siliculosus. Berwick Bay, Mrs. Gatty. 



6. Callithamnion Hookeri. Berwick Bay, Mrs. Gatty. 



7. Callithamnion Brodicei. Berwick Bay, Mrs. Gatty. 



8. Rhipidophora paradoxa. Parasitical on Ectocarpus granu- 

 losus, Mrs. Gatty. 



9. Laminaria fascia. In front of the Coves, Holy Island, 

 Dr. Johnston. 



10. Hypnea purpurascens. Abundant about the Coves in 

 Berwick Bay, Mrs. Gatty. 



11. Cladostephus verticillatus. Near the Coves in Holy Island, 

 Dr. Johnston. 



12. Sphacellaria radicans. Near the Coves, Berwick Bay, 

 Mrs. Gatty. I find that it is common both on the Berwickshire 

 and North Durham coasts, G. J. 



13. Ceramium acanthonotum. Common on our shore, growing 

 on the beds of small mussels and acorn-shells, G. J. 



14. Laurencia ccespitosa. On rocks south of Scremerston-mill ; 

 and very fine in front of the Coves in Holy Island, Dr. Johnston. 



15. Melobesia pustulata. Holy Island, Dr. Johnston. 



16. Mesogloia virescens. Common on rocks about the Coves 

 in Berwick Bay, Mrs. Gatty ; and in Holy Island, Dr. Johnston. 



17. Ulva linza. In the Singing-Cove and the adjacent coves, 

 Mrs. Gatty; and in pools among the rocks at Hudshead, Dr. 

 Johnston. 



