152 TUTE : MICRO-FAUNA AND FLORA OF MARKINGTON. 



Ophridium versatile. Eavestone Lake (now drained) and river 



Skell. The colonies in the river evidently came from the lake, 



and it would be hopeless to search for them. 

 Cothurnia imberbis. Mill-pond, above the Shaw Mill ; pond, 



Bishop Thornton. 

 Floscularia ornata. In another clear-water ditch, Markington 



(Westerns Pasture). 

 Vaginicola crystallina. Mill-pond near Shaw Mills, Bishop 



Thornton. 

 Epistylis anastatica. Markington. 

 Loxodes bursaria. Pools of water in a quarry of Gritstone, 



Spa Gill, about a mile west of Fountains Abbey. 

 Hydra viridis. Pond near Morcar. 

 Rotifer vulgaris. Markington. 

 Squamella oblonga. Do. 

 Pterodina patina. Do. 



Anuroea curvicornis. Do. 

 Notommata centrura. Do. 

 Spongilla fluviatilis. In the stream near the Rectory, Ripley; 



abundant. 

 Paramecium aurelia. 

 Peridinium cinctum. 



VEGETABLES. 

 Chlamidomonas pulvisculus. Stagnant water, Markington. 



Where this has occurred, the dried-up surface of the ditch is 



afterwards frequently covered with moss. 

 Euglena viridis. Stagnant water, Markington. 

 Tetraspora gelatinosa. Roadside pool, Ingerthorpe, at the 



point where it is fed on the N. end by a ditch. 

 Palmella cruenta. Markington. 

 Protococcus viridis (red state). Gordale Scar, in rock pools. 



Gordale Scar is, of course, not in the neighbourhood of 



Markington, but it may be useful to mark its occurrence in 



a place so well known. 

 Gonium pectorale. Small pond in a meadow, Wallerthwaite. 

 Pandorina morum. Do., do., do. 



Volvox globator. Do., do., do. 



I have only found Volvox once, then it was abundant. 



Pandorina I found more frequently. The pond was cleaned 



out, and I have found neither since. 

 Oscillatoria autumnalis. Markington. 



Naturalist, 



