Wailes: Freshwater Rhizopoda of Yorkshire. 145 
(2) Sphagnum swamps in the Vale of York comprising 
undisturbed portions of the ancient moorland and a 
few artificial ponds. 
(3) The Moors of the Hambletonian Range of Hills. 
(4) Elevated land forming the Western boundary of the 
Vale of York. 
(5) Moor land in the West Riding. 
No gatherings from Sphagnum are included in lists (1) and 
(4) except from a spring at Oldstead from which several inter- 
esting species were obtained. One pond surrounded by 
cultivated land, near Husthwaite appeared, judging from the 
Alge found in it, to be one of the ancient moorland pools ; 
it yielded Cucurbitella mespiliformis which has not been 
recorded from elsewhere in the British Isles. 
The total number of records is 120 species and 27 varieties. 
A detailed description of the genera Euglypha and Cypho- 
devia with identification tables will be found in the Proc. 
Royal Irish Acad. Vol. XXXII., Clare Island Survey, Part 65, 
1giI, also an illustration of the Cyphoderia ampulla var. major 
from Oldstead. 
The record of Cyphoderia levis from near Husthwaite is 
doubtful as only an empty test was found. 
Difflugia subequalis Penard (Revue Suisse de Zool., 1910) 
was found in a not quite typical form, but similar to those 
which occur in the Orkney and Shetland Islands and of the 
following dimensions :—length, 70-90 »; diameter, 70-85 p# ; 
diameter of aperture, 45-60 p. 
CLASS SARCODINA. 
SuB-CLAss RHIZOPODA. | 
ORDER AMOEBINA. I 2 3 Ae Wes 
FamiLty Logosa. 
Amoeba gorgonia Penard a ae a x | X 
. guttula Duj. .. Ae tes =f, x | 
ie limax Duj. e ne 2 i, KihoX | 
Ne limicola Rhumb. Ar Ea Es al 
a proteus (Pallas) Leidy .. ax 
» var. gyanulosa, Cash. ‘3 K 
% stviata, Penard .. Ae dire ox a 1 
ie vervucosa, Ehrenb. ans i wae me se | | 
* vespertilio, Penard. .. Ss. it x ae cel 
villosa, Wallich. : ay. A x 
Dactylospheri ium vadiosum (Ehren. Ve ttschinesd. anal aes 
Pelomyxa palustris Greeff Bg oie 3 x 
FaMILy RETICULOSA. 
Chlamydomyxa montana Ray Lan. Air He | 
xX 
FAMILY VAMPYRELLIDA. 
Nuclearia delicatula Cienk Ss Ay br x 
1913 Mar. 1. 
