40 BRITISH BIATOMACE^. 



3. Odontidiu5I AN'OMALUii, ii. 16. Supp. t. 61. f. 376. B.M. 



a. Braemar (Aug. 1854, I)r. Balfour). 



4. Odontidium mutabile, ii. 17. t. 34. f. 290. B.M. 



«. Plumpton, Sussex, 3Iiss Hodgson, Nov. 1854. 



b. Phimptoji, Sussex, 3farch 1851. 



c. Ukerstone, Nov. 1854. 



5. Odontidiutvi Tabellaria, ii. 17. t. 34. f. 291. B.M. 



a. Homing, Norfolk. 



/;. Ormeshy, Au(/. 1853. 



c. Plu?npton, Sussex, April 1851. 



6. Odontidium ? Harrisonii, ii. 18. Supp. t. 60. f. 373; 



/3, t. 60. f. 374. B.M. 



a. Hull, Jan. 1852. 



b. Buniham, Norfolk, Jan. 1851. 



c. Hull, Jan. 1854. 



7. Odontidium ? parasiticum, ii. 19. Supp. t. 60. f. 375. B.M. 



rt. Queen's Park, Edinburgh. 



b. Queen's Park, Edinburgh, April 1854. 



34. DENTICULA, Smith, ii. 19. 



1. Denticula obtusa, ii. 19. t. 34. f. 292. B.M. 



a. Aberdeen, Dr. Dickie, 1848. 



b. Penzance. 



c. Penzance, Mr. Ralfs. 



d. Braemar, Sept. 1854. 



e. Ayrshire, Dr. Landsborough, May 1853. 



2. Denticula tenuis, ii. 20. t. 34. f. 293. B.M. 



a. Lame, July 1853. 



b. Lame, July 1853. 



3. Denticula inflata, ii. 20. t. 34. f. 294. B.M. 



a. Beachey Head, Aug. 30, 1852. 



b. Beachey Head, Aug. 1852. 



4. Denticula ocellata, ii. 20. 



