The Bdelloid Rotifera of the Forth Area. 225 



C. tridens, Milne (9). 



On Lemna, in pond, near Winchburoh, December. 



B. Toes bearing a number of cup-like suckers, or united 

 to form a broad disc. 



C. symhiotica, Zel. (19). 



Usually symbiotic with various hepatics, but also very 

 frequently symbiotic with Sphagnum. 



Kosebery, in moss off tree, February ; Leadburn ; East 

 Cairn Hill, September, very abundant in Sphagnum; Thornton 

 Moss and Aberfoyle. 



C. russeola, Zel. (20). 



Among Zeitcodon, Eosebery; near Gifford, April ; Gullane 

 Links, November, 



C. scarlatina, Ehr. (6). 



Eosebery, Midlothian ; Boltonmoor, near Gifford. 



G. tetraodon, Ehr. (6), (3). 



Nether Habbie's Howe ; FuUarton ; Boltonmoor ; Hope- 

 toun ; Wharry Glen, Bridge of Allan. 



G. incrassata, Murray (12). 



Top of East Cairn Hill, in Sphagnum, September. The 

 second station known for the species, the other being at Fort 

 Augustus. 



G. magna, Plate (13), 



This species has a large central process on each disc 

 similar to that of P. laticeps (12). 

 Gullane Links, November. 



C. Toes three, distinct; food not moidded into pellets. 



C. plicata, Bryce (2). 



The commonest bdelloid in Scotland, and extremely vari- 

 able. The characteristic processes on the anal segment may 

 be reduced or entirely absent, or they may be produced into 



