ARCHER—ON RHIZOPODA. 259 
shall below contrast it with those few which seem to come nearest it, 
or for which it might be mistaken, and thereby perhaps overlooked, 
even though it should be encountered elsewhere by other observers. I 
need hardly say, however, that the fringe-like emanation of pseudo- 
podial processes, in conjunction with the anterior, long and branched 
ones, would alone seem enough to distinguish the present form from 
any other. I have thought the generic name Diaphoropodon cal- 
culated to express this speciality, and name this curious form accord- 
ingly Diaphoropodon mobile, reserving short generic [characters for 
the present. The resemblances which this form presents are of course 
apart from the circumstances alluded to. Leaving, then, the body 
processes out of view, the most immediate allies of our Diaphoropodon 
are seemingly forms which appear to appertain to Pleurophrys (Clap. et 
Lachm.), represented by the three drawings (Pl. X., figs. 1, 2, 8), 
and Amphitrema (nov. gen., Pl. X., figs. 4, 5), to which I would 
briefly advert below. 
Pleurophrys spherica (Clap. et Lachm.) ? (Pl. X., fig. 1), Pl. 2? amphitre- 
movdes (sp. nov.) (fig. 2), and Pl. ? fulva (sp. nov.), (fig. 3). 
Having endeavoured in the foregoing to give some account of the 
remarkable form, Diaphoropodon mobile, I pass on to the three others, 
which in the present series seem next related thereto, figured on Pl. X., 
figs. 1, 2, 3, and which I would, provisionally at least, identify as 
above. I regret, however, that I have it in my power, at present, at 
least, to do but very little more than refer to the figures and the accom- 
panying explanation of the Plate. 
It will be seen by the appended notes of interrogation that it is not 
without some amount of uncertainty as yet that I refer these forms to 
Claparéde and Lachmann’s genus, which is thus characterized :.— 
‘* Body covered by a test furnished with a single opening, and formed 
of foreign substances agglutinated by means of an organic cement,”’ to 
which diagnosis is prefixed the remark that this genus is to the Actino- 
phryans as the Difflugie are to the Amcebee.* 
From this we are to understand that in Pleurophrys the sarcode 
body emits slender linear, unbranched pseudopodia, through the single 
aperture of a test formed of agglutinated foreign particles. Nor must 
the figure given} be misunderstood, because the pseudopodia are de- 
picted as radiating all around; for, as the explanation of the Plate 
states, the figure is drawn as seen from above, and hence the opening, 
whence emanates the pencil of pseudopodia, must be below, and these, 
seen from that point of view, naturally appear to project in all direc- 
tions. 
* Claparéde et Lachmann, ‘ Les Infusoires et les Rhizopodes,’”’ p. 454. 
+ Op. cit., Pl. XXII., fig. 3. 
VOL. V. 2M 
