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ARCHER—ON RHIZOPODA. 077 
turfacea, discoid at one end, and furcate at the other. But, after all, in 
the eyes of some, our Raphidiophrys viridis may be, perhaps, only spe- 
cifically, not generically, distinct from the recognised members of the 
genus Acanthocystis—both mutually agree, as well as with others, in 
my opinion, in having two distinct sarcode regions, an inner more dense, 
and an outer more fluid ; but all the acknowledged species of the latter— 
A. turfacea (Carter), A. viridis (Grenacher, if distinct from the former), 
Greef’s form (fig. 18), loc. cit., A. spinifera (Greef), 4. Pertyana 
(mihi)—have radial spicula with discoid bases mutually approximated 
around the periphery of a single globular sarcode body, whilst in Raphi- 
diophrys viridis (mihi), the spicules are crowded without order, and are 
not discoid at one extremity. 
Genus, Pompholyxophrys (Arch.). 
Synonym, Hyalolampe, Greef.* 
Generte Characters.—Rhizopod composed of two distinct sarcode re- 
gions—the inner a dense, coloured, globular sarcode mass—the outer 
colourless, bearing a number of separate hyaline globular structures, these 
disposed in a more or less thick layer around the inner globe, which latter 
gives off more or less elongate slender non-coalescing pseudopodia. 
Pompholyxophrys punicea ( Arch.). 
Pl. IX., figs. 4, 5. 
Synonym, Hyalolampe fenestrata, Greef.* 
Specific Characters.—Inner mass loaded with numerous scattered, red- 
dish, or garnet-coloured pigment granules, accompanied by others, colour- 
less or sometimes green; outer region of great tenuity, colourless, the 
spherical vesicle-like bodies, colourless, hyaline, numerous, somewhat vary- 
mg m size, arranged therein so as to form a more or less thick stratum two 
or three deep all over the periphery of the inner globe, leaving a hyaline 
minute interval all round the latter, which gives off not very numerous nor 
very long but very delicate pellucid linear pseudopodia, some of which some- 
times appear thicker above than below, that is, as wf suddenly attenuated 
near the base; no evident nucleus nor pulsating vacuoles. 
Measurements.—Diameter variable; that of the inner body averaging 
about =2)th; total, including outer region, averaging about 74 th of 
an inch. ; 
Localities.—In various heath pools in the counties of Wicklow, Cork, 
Kerry, Westmeath ; scanty, but not unfrequently encountered. 
Affinities and Differences.—So far as I can see, this little Rhizopod 
appears to be unique, for the outer stratum bearing the problematical 
hyaline vesicles or globules has no parallel. They ae, as I have men- 
* Loe cit., p. 501; Pl. XXVIL., fig. 37. 
