The Bdelloid Motif era of the Forth Area. 223 



G. lata, Bryce (2). 



Common and general. Lothian Burn ; Leadburn, March ; 

 Bavelaw Moss ; East Cairn Hill ; Loch Leven, April ; Ochils, 

 June ; Markinch, May ; Bridge of Allan, December ; etc. 



G pidchra, Murray (12). 



Eoslin Glen, Leadburn, Nether Habbie's Howe ; Hopetoun 

 Woods, very abundant, December ; Wemyss Woods, near 

 Thornton, December. 



G. aspera, Bryce (2). 



Kirknewton, near Midcalder, March ; Boltonmoor, near 

 Gifford, April ; Hopetoun and Thornton, December. 



G. augusticoUis, Murray (12). 



Near Midcalder, a single empty case, March; Ochils, 

 June ; Hopetoun Woods ; Thornton ; numerous in Sphagnum 

 from Aberfoyle, December. 



G. annulata, Murray (12). 

 Nether Habbie's Howe. 



G. leitgebii, Zel. (19). 



Several characters, notably the loop of the gullet, lead me 

 to suppose that the species, which Zelinka does not figure, 

 belongs to this section rather than to the symbiotic group. 



Leadburn ; Wemyss Woods, near Thornton, 



Gallidina microcephala, n. sp. (Plate VII. Fig. 2, a to e). 



S-pecific Characters. — Trunk very broad, longitudinally 

 plicate, neck of moderate length, tapering to very small head ; 

 corona very narrow, angled (in dorsal view, see Fig. 2, b); 

 rostrum very broad ; teeth |- ; antenna very short ; foot short, 

 of three joints; spurs small, divergent, meeting at base, 

 convex on outer border, sigmoid on inner ; toes, three ; food 

 moulded into pellets. 



Length, when feeding, 312/^; width of trunk, 96/j-; of 

 corona, 29/x ; pellets about 9/a in diameter. 



The skin is hyaline, stippled ; the longitudinal folds few, 



VOL. XVI. X 



