200 



The Scottish Naturalist. 



4. Angustum, Hantzsch. 



Little Don. 



5. Arcnatum, Breb. 



Correnie ; Tonley. 



6. Attenuatum, Ehr. 



Towie. 



7. Calosporum, Wittr. 



Tough ; Whiteley Marsh j Toniey. 



8. Ceratium, Perty. 



Correnie ; Whiteley Marsh ; Scott's Mill, Haughton. 



9. Cornu, Ehr. 



Little Don ; Correnie ; Tonley ; var. B. Whiteley Marsh ; 

 Scott's Mill, Haughton. 



10. Costatum, Corda. 



Whiteley Marsh, 



11. Cynthia, De Notaris. 



Correnie ; Whiteley Marsh ; Pond, Haughton. 



12. Diancs, Ehr. 



Towie ; Tonley. 



13. Didymotocum, Corda. 



Correnie ; Towie. 



14. Directum, Archer. 



Tillyfour. 



15. Eboracense, Barwell Turner. 



Little Don ; Wellhouse. 



16. Ehrenbcrgii, Menegh. 



Pond, Haughton ; Balfluig. 



17. Gracile, Breb. 



Correnie ; Tonley. 



18. Incurvum, Breb. 



Little Don ; Whiteley Marsh ; Pond, Haughton. 



19. Intermedium, Ralfs. 



Correnie ; Whiteley Marsh ; Pond, Haughton ; Tonley. 



20. Juncidum, Ralfs. 



Old Curling Pond, Haughton ; Tonley. 



21. Kiitzingii, Breb. 



Little Don ; Whiteley Marsh ; Pond, Haughton. 



22. Lanceolatum, Kg. 



Mains of Balfluig. 



23. Leibleinii, Ktitz. 



