246 ANNALS OF SCOTTISH NATURAL HISTORY 



30. C. Leibteinii, Kiitz. Common from Orkney to Arran. Fre- 



quently found in conjugation. The smaller form is more 

 abundant. 



31. C. lima, Perty. General, but not abundant. The zygospore is 



subquadrate, longer than broad, sides and ends a little con- 

 cave, angles drawn out into acute processes, strongly resem- 

 bling the zygospore of the form of C. acittum given by Ralfs 

 on Plate XXXIV. fig. 5 ; so strongly indeed as to suggest 

 that they belong to one species ! 



Plate XXX. figs. $e and $f accurately represent the zygo- 

 spores of C. acutuin as seen by us. Length of zygospore of 

 C. tinea, without processes, 19-2 2^ /A; do. with processes, 

 32-4117 /x; breadth, 13-16 //. They occur frequently. 



32. C. tineatum, Ehr. Not common. Sutherland Loch Inver 



near Falls of Kirkaig ; Ross Pool near View Rock, Strath- 

 peffer ; Inverness Loch Ruthven ; many localities in Aber- 

 deen, Kincardine, Forfar, and Perth. Not seen from other 

 counties. 



(3 Forma striis longitudinalibus spiralibus, Rabenh. 

 Extremely rare. Aberdeen in a pool a short dis- 

 tance north from Loch Dawan. 



33. C. Lundellii, Lagerh. Very rare. Sutherland Loch Inver ; 



Aberdeen Fyvie, Whitely Marsh near Alford, and Marsh 

 S.W. from Loch Kinnord. 



34. C. Lunula (Miiller), Nitz. General. 



35. C. inacilentiim, Breb. Not common. Ross Poolewe, near 



Tain, and Strathpeffer ; Inverness Loch Ruthven ; Aber- 

 deen Fyvie, Little Don and Whitely Marsh near Alford, 

 Bourtie, Scotston Moor, Tomachar and Homehead in 

 Cromar, south of the Ord near Dinnet ; Forfar Lundie 

 Bog, Monroman Moor, Findhaven Hills ; Perth Durdie, 

 Balboughty, Taymount, Buchanty. 



36. C. malinvernicum, De Notaris. Rare. Inverness near Brin ; 



Aberdeen - - Bourtie ; Kincardine - - Loch of Park, near 

 Crathes ; Perth in Athole Forest near Loch Mharc, and 

 East from Falar. 



37. C. moniliferuin (Bory.), Ehr. Not common. Caithness - 



Loch Hempriggs ; Ross Coul, Loch Kinnellan, and near 

 Tain ; Inverness Glen Urquhart, and Brin Pond ; Nairn ; 

 Banff Glen Avon; Aberdeen and Kincardine many 

 localities ; Forfar Menmuir, Monroman Moor, and Easter 

 Ogil ; Perth east from Falar, Durdie, Hill of Moncreiffe, 

 Buchanty ; Fife Kemback and Mt. Melville. 



