5 1 8 
Notes . 
APPENDIX TO THE REVISED LIST OP BRITISH 
MARINE ALGAE 1 . — In the preparation of the Revised List of 
British Marine Algae, which is, we believe, the first attempt that has 
been made in recent years to show the distribution of Marine Algae 
reported to occur in Britain, it was almost inevitable that some errors 
would pass unobserved by us. 
I. It has been objected to our method of mapping out Britain into 
littoral districts that while some places are included in two separate 
divisions, others are not included in any of them. This objection, we 
think, may be easily met by a very slight alteration in the delimitation 
of the districts, which in no way affect the distribution given in the 
body of the work. 
1. From Duncansby Head to Ardnamurchan Point, including the 
Orkneys, Shetlands, and the outlying Plebrides in the same latitude. 
2. From Ardnamurchan Point to the Esk, including the outlying 
islands. 
3. From Duncansby Head to Aberdeen. 
4. From Aberdeen to the Tweed. 
5. From the Esk to the Great Orme’s Head, including the Isle of 
Man. 
6. From the Great Orme’s Head to the Land’s End, including 
Anglesea, Lundy Island, and the Scilly Islands, &c. 
7. From the Tweed to Cromer. 
8. From Cromer to Dover. 
9. From the Land’s End to, and including Dover, the Isle of 
Wight, and the Channel Islands. 
Ireland. 
10. From Malin Head to Llyne Head, including the outlying 
islands. 
I I. From Llyne Head to Crow Head, including the outlying islands. 
12. From Malin Head to Howth. 
13. From Howth to Raven Point. 
14. From Crow Head to, and including Raven Point. 
11. It has been affirmed 2 that we were in error when we stated 
that the ‘ type-specimens ’ of Mrs. Griffiths were in the possession of 
the Linnean Society of London, and those of Mrs. J. E. Gray in the 
Herbarium of the University of Cambridge. In the passage anim- 
adverted on we employed the word ‘ type ’ in the same broad sense in 
1 See Ann. Bot., Vol. V, p. 63. 2 See loc. cit., p. 228. 
