BEITISH BIATOMACE^. 

 .3. TBICEHATItm 8TRI0LATUM, i. 27. t. 5. f. 46, ii. 87. 



9 



4. Triceratium ExiGUUii, ii. 87. B.M. 

 a. Onnesby. 



5. Triceratium armatum, ii. 87. 



6. Triceratium undulatum. B.M. 

 a. River Medway. 



11. CYCLOTELLA, Smith, i. 27. 



1. Cyclotella KiJTziNGiANA, i. 27. t. 5. f. 47 ; Frontis- 



piece, i. f. xlvii. B.M. 



a. Wareham, Sept. 1851. 



b. Lewes, Oct. 1850. 



c. Eastjleet, Dorsetshire, Sept. 1852. 



d. Northjleet, March 1852. 



2. Cyclotella operculata, i. 28. t. 5. f. 48. B.M. 



a. Plumpton, Sussex, March 1852. 



b. Plumpton, Sussex, March 1852. 



c. Papcrmill Pond, Lewes, June 1853. 



3. Cyclotella antiqua, i. 28. t. 5. f. 49. B.M. 

 a. Cantyre Peat. 



4. Cyclotella Rotula, i. 28. t. 5. f. 50. B.M. 



a. River Shannon, July 1853. 



b. River Shannon near Athlone, July 1853. 



5. Cyclotella punctata, ii. 87. B.M. 

 a. Wisbeach. 



6. Cyclotella Dallasiana, ii. 87. B.M. 

 a. Medway, March 22, 1854, E. W. D. 



12. CAMPYLODISCUS, Smith, i. 28. 

 1. Campylodiscus HoROLoaiL-M, i. 28. t 6. f. 51. B.M. 



a. Isle of Skye, Prof. Williartison. 



