56 BRITISH DIATOMACE^. 



9. Pinnularia distans, n. sp. V. lanceolate, acute ; costae radiate, 

 not reaching central line, distant, 10 in '001". Length '0036" to 

 •0052". v.s. 



Marine. Stomach of Scallop, Feb. 1851. Coast of Sussex, W. Sm. 

 Plate XVIII. 169. 5. outline of F. V. • 



10. Pinnularia peregrina, Ehr. V. lanceolate, obtuse; costae ra- 

 diate, reaching central line, subdistant, 13 in -001". Length -0032" 

 to -0058". v.v. 



Ehr. in Kiitz. Bacill. xxviii. 52. 



Brackish water. Near Lewes, Nov. 1851, W. Sm. Cockerham Marsh, 

 Lancashire, Mr. Johnson, Mar. 1852. 



Plate XVIII. 170. 



11. Pinnularia acuta, n. sp. V. lanceolate, acute; costae radiate, 

 reaching central Hne, 22 in -001". Length -0026" to -0046". v.v. 



Fresh water. Plumpton, Sussex, Mar. 1852, W. Sm. Lough Mourne 

 Deposit. Near Aberdeen, Dr. Dickie. Cantyre Peat. Marl, Co. Down. Dol- 

 gelly Earth. Peterhead Deposit. 



Plate XVIII. 171. 



12. Pinnularia directa, n. sp. V. linear-lanceolate, acute; costae 

 parallel, reaching central line, 20 in -001". Length -0025" to -0037". 

 v.v. 



Marine. Coast of Sussex, Feb. 1852, W. Sm. 

 Plate XVIII. 172. b. outline of F. V. 



13. Pinnularia radiosa, W. Sm. V. lanceolate, obtuse ; costae ra- 

 diate, contiguous, 24 in 'OOl". Length -0016" to -0025". v.v. 



Navicula radiosa, Kiitz. Bacill. iv. 23 ? 



Fresh water: frequent. Corfe Castle, Dec. 1849, W. Sm. Wray, Mr. G. 

 Smith. Peterhead Deposit. Lough Mourne Deposit. Cantyre Peat. Dol- 

 gelly Earth. 



Plate XVIII. 173. 



