ON SCOTTISH DESMIDIE/E 



43 



11. C. arctouin, Nordst. Very rare. Aberdeen Braes of Gight ; 



Kincardine Muchalls ; Forfar Clova Table-land. 



12. C. attenuatum, Breb. Extremely rare. Inverness Brin (Mrs. 



Farquharson). 



1 3. C. bicardia, Reinsch. Rare. Aberdeen near Old Mill, Birse- 



more Loch, near Craigendinnie Farm, Birkhill, and Bogwartle 

 in Cromar, Cambus O'May, Dalbagie, Ballochbuie ; Kincar- 

 dine Crathes, Bishop's Dam. 



14. C. bioculatum, Breb. -- Not common. Orkney, Sutherland, 



Inverness, Aberdeen, Kincardine, Forfar, Perth. 



15. C. biranc, Nordst. Extremely rare. Perth, Spital of Glen 



Shee (Mr. W. West). Length, 1 2 /x ; breadth, i o /x ; isthmus, 

 6 P . 



1 6. C. biretum, Breb. Rare. Aberdeen Bridge of Don ; Kincar- 



dine Garrol. 



ft supernumeraria, Nordst. Extremely rare. Perth 

 Keithick, near Coupar-Angus (Mrs. Farquharson). 



17. C. Blytii, Wille. Not common. Ross, Aberdeen, Kincardine, 



Dumbarton, Argyle (Mull), Fife, Kirkcudbright. 



1 8. C. Boeckii, Wille. Pretty common. Sutherland, Ross, Inverness 



(in Skye), Banff, Aberdeen, Kincardine, Forfar, Perth, Stirling. 



19. C. Botrytis (Bory), Menegh. General. With zygospores, Loch 



Kinellan, Ross (Mrs. Farquharson). 



f3 subtumidum, Wittr. - - Rare. Aberdeen, Kincardine, 



Perth (Lake of Monteith). 

 y emarginatum, Hansg. Is not uncommon on wet rocks. 



20. C. Brcbissonii, Menegh. General. 



21. C. Brooind, Thwait. Rare. Inverness near Brin ; Aberdeen 



near Alford ; Kincardine a few localities in Strachan. 



22. C. calcareuin, Wittr. Not common. Ross, Inverness, Aberdeen, 



Kincardine, Forfar, Perth, Stirling, Argyle (Mull). 



23. C. cirailare, Reinsch. Very rare. Inverness Loch Ruthven 



(Mrs. Farquharson) ; Perth near Loch Mharc, in Athole. 



24. C. ctxlatuin, Ralfs. Common, especially on wet rocks. 



ft spectabile, De Not. Is nearly as common, and occurs 

 in similar localities. 



25. C. commissurale, Breb. Rare. Aberdeen, Kincardine, Forfar 



(in Glen Clova). 



ft acutum, Breb. Very rare. Aberdeen near Bishop's 

 Loch, and near Aboyne ; Kincardine formerly at 

 Mavis Bank, Loch of Lumgair, near Stonehaven, and 

 Dalbrake in Strachan. 



