and there in a reticnlose manner. The branching takes place 
mostly near the base, but sometimes one presents a somewhat 
tufted appearance near the upper extremity. Although very 
slender and colourless, the pseudopodia sometimes show dis- 
tinctly the passage of very minute granules, and occasionally 
show slight protuberances or expansions at various points 
along their length. All these characters 1 have tried to 
portray in the figure (PI. XVII, fig. 2). Their motion or 
change of form is ordinarily slow and somewhat languid, hut 
is constant, for, although persistent looking at them in an 
endeavour to trace their changes step by step is a draft on 
one’s patience, still, upon a few moments’ suspension of obser- 
vation of them, and on again viewing them, very perceptible 
changes will have been seen to have taken place, not only in 
the branching and extension of the pseudopodia, but also in 
the mutual disposition of the group of central cells. But it 
certainly takes some amount of protracted observation to 
perceive all this — that is, the modifications of form character- 
istic of the rhizopodous nature. However, the presence of 
foreign bodies entangled in the substance is not uncommon, in 
this respect unlike Kaphidiophrys, in whose substance never 
yet any foreign bodies presented themselves. 
But if the slowness of the motion or change of figure of 
the pseudopodia should at all raise a doubt that we had a true 
rhizopod before us, and not actually some vegetable produc- 
tion which the cells might call to mind, the encompassing of 
so unusual and so comparatively unmanageable a subject of 
attack as a portion of a fibre of wool by a fine specimen of 
this noteworthy form, which I witnessed, would settle the 
poiut. A fibre of wool happened to be in the dip made from 
the gathering and presented itself upon the slide*, and in close 
contiguity to it a large specimen of this new form, copiously 
filled with the central cells, and abundantly spreading forth 
its pseudopodia, not quite so much so, however, as in other 
specimens I had seen. By degrees, I think more by acci- 
dent due to some external force, probably exerted by myself 
in slightly modifying the position of the covering-glass, the 
rhizopod and the wool came into contact. I waited with 
curiosity to see what it might do. The rhizopod first spiead 
itself down along the wool, and the central cells, in place of 
forming a rounded cluster as at first, became distributed in a 
crowded drawn-out series. Meantime the pseudopodia by 
degrees began to disappear along the sides, but to present 
themselves in increased force upwards and downwards along 
the wool, as it were seemingly mooring the rhizopod to the 
wool. Presently these reached quite up to one end of the 
