268 
speciality separating them from any other heliozoan genus. 
The absence of a c central capsule,’ of course, excludes them 
from Haeckel’s marine Radiolaria. 
As it seems to me, however, that the subsequent of these 
forms met with by me approximates the more closely to 
Raphidioplirys, whilst that first found (or Focke’s form) 
comes nearer Actinophrys, I shall advert to the former in 
the first place, although the second in point of time of 
heins: encountered. 
O 
As previously, it will be more convenient in the present 
running commentary to take up the examination of the 
structure of each from within outwards, as Focke, indeed, 
has done iu regard to that which I conceive to be identical 
with his form. 
We find, then, in the form which I name Heteroplirys myrio- 
poda (PI. XVII, fig. 4), a ball of sarcode of about the same 
average dimensions as in Raphidioplirys, hyaline, sharply 
bounded, and cliargedjwith a similar dense stratum of somewhat 
large-sized chlorophyll-granules, arranged in a hollow-globular 
manner beneath the periphery of the orbicular sarcode body, 
with a few colourless minute granules besides, sometimes 
showing a dancing movement. From this body are given off 
not very numerous, comparatively stout, slightly tapering, 
filiform pseudopodia, some of which are sometimes somewhat 
dilated at the base or origin. Surrounding this globular 
central body an outer stratum presents itself, of a somewhat 
butf- coloured hue and cloudy granular appearance. One can to 
some extent recognise three different regions in this investing 
stratum, not at all separated, however, by any decided line of 
demarcation ; at the lowest part, or that nearest to the central 
body-portion, it is more cloudy and somewhat more granular 
in appearance than a little higher up, where it gradually 
assumes a more homogeneous condition until towards the 
upper third of its depth, where this sarcode investment 
becomes more characterised by a sort of linear arrangement 
of the substance, the apparent lines assuming a nearly radial 
direction, until towards the periphery the substance becomes, 
as it were, slit up into a very great number of fine linear 
acute prolongations, giving the margin a fimbriated or fringed 
appearance. These very slender sarcode processes do not all 
project in a strictly radial manner, for they often lie more or 
less obliquely, and sometimes appear as if they originated 
more or less in a kind of tufted manner, thus giving the 
fringe-like margin a somewhat irregular appearance. The 
pseudopodia emanating from the inner sarcode body pass 
directly through this outer stratum and project, some of 
