BRITISH DIATOMACE^. 23 



47. Navicula HrMEROSA, ii. 93. B.M. 

 a. Wisbeach (River Nene, Jan. 1854, Mr. G. Smith). 



48. Na\t:cula Cbabro, ii. 94. 



49. Navioula trinodis, ii. 94. 



50. NA\aCULA PULCHRA, n. s. 

 a. Harwich. 



51. Navicula cassa. B.M. 



a. 3Ir. Jenner. 



b. Sussex, Mr. Jenner. 



52. Na^^cula Pandora. , B.M. 



a. Stomach of a Scallop, (b.) 



h. " X. Paitdura. Stomach of a Scallop." 



53. Navicula granulata, JBreb. B.M. 

 a. Cumbrae, Mr. R. Hertnedy, 30, 1, 54. 



54. Navicula habitata. Bjyf^ 

 a. Dr. Arnott. 



55. NA^^cuLA apiculata, Breb. B.M. 

 a. Poole Bay. 



20. PIXNULARIA, Smith, i. 54. 



1. Pixnularia nobilis, i. 54. t. 17. f. 161. B.M. 



a. Lough ^roiirne Deposit. 



b. Falaise, De Brebisson. 



2. PlNNULxtRIA MAJOR, i. 54. t. 17. f. 162. B.M. 

 a. Peterhead Deposit, Dr. Dickie, Aug. 1848. 



■•i. PiNxuLARiA ATRiDis, i. 54. t. 18. f. 163 ; Front, i. 



i. cLxiii. B.M. 



a. Feb. 17, 1849. 

 h. Wureham, Feb. 1848. 



