18 BEITISH DIATOMACE^. 



4. Amphiprora vitrea, i. 44. Supp. t. 31. f. 270. B.M. 



a. Hove, Sept. 13, 1852. 



b. Shoreham, Sussex, Sept. 1862. 



5. Amphiprora constricta, i. 44. t. 15. f. 126. B.M. 



a. Sussex, April 1850. 



h. Seaford, Sussex, April 1854. 



6. Amphiprora elegans, ii. 90. B.M. 

 a. Harwich, W. K. B. {Mr. Bleakeky), 28, 9, 53. 



18. AMPHIPLEURA, Smith, i. 48. 



1. Amphipleura pellucida, i. 45. t. 15. f. 127. B.M. 



a. Bristol, Mr. Thivaites, 1848. 



b. Lewes, Nov. 1850. 



c. Bristol, Ajiril 1849. 



d. Redesdale, Nov. 1854. 



2. Amphipleura sigmoidea, i. 45. t. 15. f. 128. " B.M. 



a. Lewes, Sussex, 1852. 



h. hancing, Sussex, Nov. 1852. 



c. Hove, Sussex, Sept. 1852. 



d. Bexhill, Sussex, Sept. 1850. 



3. Amphipleura inflexa, ii. 90. 



19. NAVICULA, Stnith, i. 46. 



§ I. 



1. Navicula rhomboides, i. 46. t. 16. f. 129, ii. 90. B.M. 



a. Wareham, Dec. 1849, 



Var. /3. b. Elchies, Baniiishire (Br. Gregory, Aug. 1854). 



c. Dorset, Sept. 1849. 



2. Navicula lanceolata, i. 46. Supp. t. 31. f. 272. B.M. 



a. Newhaven, Dec. 9, 1852. 



b. Newhaven, Sussex, Dec. 1852. 



I 



