130 
hyaline outer coat or capsule, with extremely pale digitate 
processes projecting through the latter. In A. digitata the 
separation of the hyaline protoplasm of the rhizopod from the 
outer capsule is still more distinctly evident, since the first 
surrounds the granular interior substance as a more or less 
broad stratum. The motions are more vigorous, and are 
indicated by the fact that mostly at first broad hillock-like 
processes, still encompassed by the outer border, become 
pushed forth, from whose ends then the digitate pseudopodia 
project. The granular inner parenchyme (endosarc) shows 
for the most part a coarsely granular substance, which, how- 
ever, appears enclosed in an extremely finely granular one. 
In the interior there is to be seen constantly a large round 
nucleus, with a likewise comparatively large and sharply- 
bounded nucleolus, and besides mostly a large and a couple 
of smaller contractile vesicles. Likewise, the above mentioned 
lime-crystalloids are never absent. The animal reaches a 
diameter of about 0.1mm.” 
This, then, is all Greeff has to say on this form, and he 
gives no more close description. All his forms, however, are 
illustrated by figures. 
Yet a third form, named Amphizonella flava, is (provision- 
ally) referred by Greeff to the genus typified by the two pre- 
ceding forms, and I would complete the data to enable the 
conception to be gained thereof by giving his words: 
AMPHIZONELLA FLAVA (Greeff).! 
** Although,” says the author, “I at first hesitated to refer 
this form to the same genus as the preceding, still I may do 
so, be it, perhaps, but provisionally. This is likewise sur- 
rounded by a coat, but a much firmer one, as it would appear 
a peculiar ‘cuticular shell’ (‘hautige Schale’). This 
‘shell’ (‘Schale’) is of a light yellow colour, and, unlike 
that of the two previously described species, is not directly 
applied to the body proper of the rhizopod, but lies loosely 
round about it as a wide sac, and it thus follows the contrac- 
tions and modifications of the inner body, so far as these touch 
its walls, but always with a certain tenacity, whereby con- 
tinually alternating folds and lines travel over the surface. 
Nevertheless, the ‘skin’ (‘Haut’) possesses an extraordinary 
extensibility, so that sometimes it becomes stretched, by the 
pressing forwards of the processes of the inner body, to an 
extremely thin and delicate layer, which may be carried on to 
1 Thid., T. xviii, fig. 19a, 4. 
