144 
FRESHWATER RHIZOPODA FROM THE NORTH AND 
WEST RIDINGS OF YORKSHIRE. 
' G. H. WAILES, F.L.S. 
DuRING Ig10 many gatherings were collected and examined 
for Alge and Rhizopoda in the Northern part of Yorkshire. 
Lists of Algz have been published by the Yorkshire Naturalists’ 
Union, but with the exception of Mr. Brown’s list for the 
Sheffield District * no lists of the Yorkshire Rhizopoda are 
available. 
The following are the principal localities from which 
collections were gathered :— 
(1) Husthwaite, 15 miles N. of York, numerous ponds, 
ditches, hedges, etc. (200-480 ft.). 
Pondhead reservoir (400 ft.). 
Newburgh Priory, leke and stream (100 feet). 
Wass, stream and woods in valley (400 feet). 
Kilburn, ponds and ditches (300 feet). 
Oldstead, woods, pond and spring (400 feet). 
(2) Pilmoor, Sphagnum bog and pools (go feet). 
Leckby Carr, Sphagnum bog (100 feet). 
Thirsk, ponds near the town (100 feet). 
Alne, ponds i in the Park of Alne Hall and in Alne Forest 
(150 feet). 
(3) Gormire Lake (450 feet). 
Hambleton Moor (800-900 feet). 
Wass Moor (800 feet). 
Helmsley Moor (800 feet). 
Billsdale valley and moors (800-1000 feet.) 
Bransdale Moors (700-1300 feet). 
Fadmoor (500-600 feet). 
Harland Moor (750 feet). 
Rudland Moor (800-1100 feet). 
Goathland Moors (600-800 feet). 
Rievaulx Abbey woods and stream (300 feet). 
(4) Fountains Abbey, ponds and woods. 
Harrogate and Plumpton ponds. 
Staveley Dam near Knaresboro’. 
(5) Bolton Moors, above the Abbey. 
Cockett Moss (Collected by W. West). 
Of the above groups— 
(1) Consists of elevated land forming the N.E. borders of 
the Vale of York. 
* “The Naturalist,’ 1910, p. 92. 
’ Naturalist, 
