90 Proceedings of the Royal Irish Academy, 
Amphi%onella digitata (Greeff)."^* 
Medium-sued, variable, and mostly lohed in figure ; nucleus large, con- 
taining a comparatively large and sharply -hounded nucleolus ; hody-7nass 
colourless, coarsely granular at the central region, ificlosing, however, a 
further finely gramdar sid)stance containing lime crystalloids ; outer mar- 
ginal region hyaline; pseudopodia colourless, very short, conical and 
Hunt; the investing coat of less depth than in k.. violacea, uniform in 
thickness, smooth. 
Amphizonella flava (Greeff ).f 
Minute, variable in figure ; nucleus not detected ; body-mass colour- 
less (?), granular ; pseudopodia pale, hyaline ; outer coat standing apart 
from the inner body, pale yelloivish, very thin, smooth, often falling into 
folds. 
Amphizonella vestita (Arch.) J 
Minute, but variable in size, normally rotund, but capable of varying 
its figure; nucleus comparatively large, elliptic, granula/r, smoothly 
bounded, but not seemingly enclosed in a special investment ; body-mass 
nearly colourless, or bluish, varied by a palish-brownish hue, enclosing a 
number of minute clear shiny purplish- grey, generally elliptic, sharply 
bounded corpuscles, these forming a stratum just under the periphery of 
the body, below which often occurs a more or less dense stratum of large 
bright chlorophyll-granules ; pseudopodia hyaline, generally emanating in 
a cluster from a comparatively restricted region, but occasionally singly 
from other different points, short and conical, or more elongate and 
tapering, bluntly pointed; investing coat colourless or faintly bluish, thin, 
and of uniform depth, often seemingly deficient at the region giving off the 
corona of pseudopodia, at other times seemingly completely covering thelody, 
showing a number of sharply -marlced, closely and vertically -posed equidis- 
tant lines, seen, when viewed equatorially , in its substance reaching 
through its depth, and clothed superficially with a dense covering of more 
or less elongate extremely fine filiform hair-lihe processes, giving a hirsute 
or pilose or narrow fringe-like appearance, or, when empty ^ a dotted aspect, 
or these obsolete. 
Measurements : Biameter varying from about '^ down to per- 
haps two-thirds of that size. 
Localities : Pools in Co. Westmeath and Tipperary. In the latter 
locality no specimens were seen showing chlorophyll-granules — a tem- 
porary character however in many Ehizopoda. 
Affinities and Differences. — Considerations which would fall under 
this head, so far as they have a bearing in a generic point of view, 
and so far as the genus Amphizonella is typified by Greeff's forms, 
have been already adverted to. In respect, however, to our new form, 
* Loc. cit., p. 328. 1, xviii., fig. 18. 
t Ibid., p. 329, I. xviii., fig. 19 a, b. 
X PI. xii., figs. 1-6, accompanying this Paper. 
