124 
BRITISH DESMIDS. 
Cosmarium anceps. Lundell , Desm. Suec. (1871), p. 48. t. 3, f. 4. 
Archer, Micr. Journ. (1875), xv., p. 409. 
Bray Head (Ireland). 
Cosmarium Reinschii. Archer, in Micr. Journ. { 1876), xvi., p. 109. 
Cosmarium , sp. Beinsch. Contrib. (1875), t. xviii., f. 4. 
Ireland. 
Cosmarium quinarium. Lundell Desm. Suecioe (1871), p. 28, t. 2, f. 14. 
Archer, in Journ. Bot. (1874), iii., p. 93. 
Ireland. 
Cosmarium reniforme. Archer, in Journ. Bot . ill. (1874). p. 93. 
( Cosmarium margaritiferum , var. reniforme. Ralfs’ Desm.) 
England, Wales, Scotland, Ireland. 
Cosmarium hexastichum. Lundell , Desm. Suec. (1871)> j?.33, t. 3,/ 13. 
Archer, in Journ. Bot. (1874), iii., p. 93. 
Ireland. 
Cosmarium quadrifarium. Lundell, Desm, Suec. (1871), p. 32, t. 3, /. 12. 
Archer, in Journ. Bot. (1874), iii., p. 93. 
Ireland. 
Cosmarium Nymannianum. Grunon , in Rahh. Fl . Alg. (1868), m., 166. 
Nordstedt Norges Desm. (1873), p. 17. 
Archer, in Journ. Bot. (1874), iii., p. 93. 
Ireland. 
Cosmarium calcareum. Wittr. Sotv. Alg., t. A, f. IS. 
Archer, in Journ. Bot. (1874), iii., p. 93. 
Ireland. 
Cosmarium variolatum. Lundell , Desm. Suec. (1871), p. 41, t. 2,/. 19. 
Archer, in Journ. Bot. (1874). iii., 93. 
Ireland. 
Cosmarium pseudopyramidatum. Lundell, Desm. Suec. (1871), 
p. 41, t. 2,f. 18. 
Archer, in Journ. Bot. (1874), iii., 93. 
Ireland. 
Cosmarium pseudoconnatum. Nordstedt Desm. Braz. (1873), p. 214, 
t. 3,/. 17. 
Archer, in Journ. Bot. (1874), iii., 93. 
Ireland. 
Cosmarium gotlandicum. Wittr. Sotv. Alg., t. 4,/. 14. 
Archer, in Journ. Bot. (1874), iii., p. 93. 
Ireland. 
Xanthidium Robinsonianum. Archer, in Micr. Journ. xx. (1880), p. 111. 
Ireland. 
Xanthidium Smithii. Archer, in Prit. Inf. (1861), p. 736. 
Wareham. 
Arthrodesmus bifidus. Brel. Liste,p.l35, t. 1 ,/. 19. 
Archer, in Prit. Inf. (1861), p. 736. Micr. Journ. (1870), p. 90. 
Mullingar (Ireland). 
Arthrodesmus tenuissimus. Archer, in Micr. Journ (1864), 1 v.,p. 175. 
Dublin Mountains. 
