32 BRITISH DIATOMACE^.. 



6. Surirella splendida, KUt::. F. V. ovate; V. ovate, elongated, 

 alae distinct ; canaliculi conspicuous, 4 in 'OOl", reaching the central 

 line. Length -0050" to -0072". v.v. 



Kiitz. Bacill. vii. 9. acl specim. authen. quae misit amic. De Brebisson. "W. 

 Sm. Ann. 2ncl Ser. vol. vii. pi. ii. 2. Nav. splendida, Ehr. Inf. xiv. 1 . 

 Prit. Anim. iii. 151. 



Freshwater. Near Lewes, Oct. 1850. Ashdown Forest, Sept. 1851,^. Sm. 

 Premnay and Cantyre Peat. Dolgelly Earth. 



Plate VIIL 62. 



7. Surirella nobilis, n. sp. V. linear-ovate ; canaliculi conspicuous, 

 3 in '001", not reaching to the central line. Length '0083" to 

 •0144". v.s. 



Surirella splendida, "W. Sm. Ann. 2nd Ser. vol. vii. pi. ii. 3. 



Fresh water. Lough Mourne Deposit. Dolgelly Earth. Raasay Earth. 

 Lough Island- Reavey Deposit, &c. 



Plate VIIL 63. 



8. Surirella striatula, Turp. V. broadly ovate, faintly striated ; 

 striae 40 in "OOl" ; canaliculi distant, 3 in 'OOl", reaching the central 

 line. Length -0041" to -0061". v.v. 



Kiitz. Bacill. vii. 6. W. Sm. Ami. 2nd Ser. vol. vii. pi. iii. 1. Navicula 

 striatula, Ehr. Inf. xxi. 15. Prit. Anim. iii. 137. Bright. Inf. ix. 2. 



Marine or brackish water : common. Poole Bav, July 1848. Newhaven, 

 Sussex, Feb. 1852, W. Sm. Coast of Norfolk, Mr. Brightwell. 



Plate IX. 64. Frustule vsdth endochrome. Frontispiece, fig. LXIV. 



9. Surirella Gemma, Ehr. F. V. ovate ; V. ovate or ellipti(;al ; 

 alae distinct ; canaliculi delicate, unequally distant, reaching central 

 line; surface of V. striated; striae 48 in -001". Length -0025" to 

 0058". v.v. 



Kiitz. Bacill. vii. 11. "W. Sm. Ann. 2nd Ser. vol. vii. pi. iii. 2. Prit. Anim. 

 XV. 2, 3, 4. 



Marine : common. Poole Bay, July 1849. Shoreham Harbour, Aug. 1850, 

 &c., W. Sm. 



Plate IX. 65. 



10. Surirella fastuosa, Ehr. V. ovate, alae small; canaliculi few, 

 inflated towards the margin ; median line turgid. Length '0020" 

 to -0025". v.v. 



