244 ANNALS OF SCOTTISH NATURAL HISTORY 



(3 minor, Turner. Long, 260 /j. ; lat., 16 /x ; lat. apic., 12 ji. 

 Endochrome in six fillets (\V. B. T.) (Our Plate 

 IV. fig. 7.) 



Very rare. Ross Balmacarra, legit. A. W. Wills 

 (W. B. T.) 



ii. C. calospornm, Wittr. General. With zygospores in Aberdeen 

 west from the Ord near Dinnet ; and in Kincardine 

 near the schoolhouse in Glen Dye. 



i 2. C. ceratium, Perty. General, but scarce. With zygospores in 

 Aberdeenshire at Scotston Moor and Slewdrum. Zygo- 

 spore small, smooth, orbicular, placed between the conjugating 

 fronds ; very like to that of C. gracile, Breb. 



13. C. cornu, Ehr. General. 



/3 Ralfs. -Very rare. Aberdeen in a ditch at White- 

 haugh near Alford. 



14. C. costatum, Corda. General. 



15. C. cynthia, De Notaris. In numerous localities, but usually 



very scarce. Noted from the following counties : Orkney, 

 Sutherland, Ross, Inverness, Nairn, Aberdeen, Kincardine, 

 Forfar, Perth, Dumbarton. 



1 6. C. decorum, Breb. Very rare. Perth pools near Loch Mharc 



in the Forest of Athole ; Argyle head of Glen Coe. 



17. C. Delpontii, Klebs. (crassum, Delp.) - - Rare. Inverness at 



Brin ; Aberdeen at Bourtie and Slewdrum ; Forfar in 

 Glen Clova between Clova and Rottall. 



1 8. C. Diana, Ehr. General. With zygospores at Coul in Ross; 



Aberdeen in a marsh between Loch Kinnord and Cambus- 

 o'-May ; Perth Loch Lundie. 



19. C. didymotocum, Corda. General. 



f3 Baillyanum, Breb. General, but usually scarce. 



20. C. directum, Archer. -- Not common. Sutherland, Ross, 



Inverness, Aberdeen, Kincardine, Forfar, Perth, Argyle, 

 Arran. 



21. C. eboracense, Turner. Very rare. Aberdeen at Little Don, 



Haughton (Mrs. Farquharson). 



22. C. Ehrenbergii, Menegh. Not common. Ross near Tain; 



Inverness near Brin ; many localities in Aberdeen and 

 Kincardine ; Perth Durdie, Moncreiffe, near Scone, near 

 Loch Mharc, Ben Lawers ; Fife Tent's Moor. 



23. C. gracile, Breb. Not uncommon. Sutherland, Ross, Inver- 



ness, Nairn, Aberdeen, Kincardine, Forfar, Perth, Argyle. 



With zygospores on the S.E. side of Brimmond Hill, and 

 the Ord, both near Aberdeen. Zygospore thick-walled, 



