JOURNAL OF MICEOSCOPICAL SCIENCE. 



DESCRIPTION OF PLATE I, 



Illustrating Dr. Donldn's paper on the Marine Diatomaceae 

 of Northumberland, with a Description of several New 

 Species. 



Fig. 

 1. — a, bi & c, Pleurosiffma falcatum, n. sp., Doukin. 



11. — 5, Amphora ocellata, ^ ^ 



12. — 5, „ naviculacea, „ „ 



13. — b, J, lineotata, „ „, 



14. — a, Systephania Anglica, „ „ 



15. — a & d, Druridgia geminata, „ ,, 



16.—- 'C, Eupodiscm teneUus, Pc Breb. 



17. — a & i, Navicula refusa, ^ 



X abovLt. 400 diameters. 



