30 BRITISH FRESHWATER RHIZOPODA. 
ture terminal, linear, invaginated, elastic; plasma 
colourless, granular, containing numerous oil-like 
globules and food-particles, usually filling the test; 
nucleus single, containing a central nucleole and 
placed posteriorly; contractile vacuoles numerous ; 
pseudopodia single, filose. 
Length 34,.; breadth 25; thickness 16-17 p. 
Habitat.—Mosses. 
Enciuanp.—Cumberland ; Eccleshall, Yorkshire ; and 
Derbyshire (Brown). 
-  Scornanp.—St. Kilda (Brown). 
Tretanp. —Clare Island, Mayo. 
In this species, as with the majority of those inhabit- 
ing the drier mosses, the pseudopodia are very rarely 
displayed; in the instances observed by Brown only a 
single filose pseudopodium was emitted, of a peculiar 
tapering character. The pseudopodia of C. bryorum 
have not been observed. The method of multiplication 
in C. timida is not known; the aperture is linear, 
bordered by sharply incurved lips, and unless seen 
exactly at right angles it shows as two intersecting 
curved lines; the hips are usually tightly closed, but 
that they are capable of distension is evident from the 
presence in the plasma of large food-particles and 
even diatoms. At Hecleshall near Sheffield it was found 
in moss on walls and on a water-trough; on Clare 
Island and St. Kilda in damp moss on the ground. 
Genus 16 b. DIPLOCHLAMYS Greeff. 
Diplochlamys GreEre in Sitzb. Ges. nat. Marburg, III (1888), 
p. 104. 
Amaba (pars) Punarp in Mém. Soc. Genéve, XXXI, 1, u 
(1890), pp. 192-193. 
Test hemispherical or cup-shaped, flexible, formed 
of an inner and outer envelope; the inner envelope 
consisting of a hyaline membranous sac closely in- 
