270 
selves evident by piling up the spicules into long peaks 
around certain pseudopodia. These latter, in the present 
form, are much coarser, microscopically speaking, than they 
are in Raphidiophrys. 
The second form (PL XVI, fig. 3) here to be drawn attention 
to is one, examples of which I exhibited in September, 1867, 
at a meeting of our Club, but I did notthen venture to describe 
it or to give it a name. My attention was recalled to it on 
the appearance of a paper lately published by Dr. Focke, of 
Bremen, 1 in which a rhizopod (his “No. 1”) which I cannot 
but consider as identical with the present is expatiated on and 
figured, but neither specially described nor named. As I feel, 
however, pretty satisfied that it should no longer remain so, and 
as the fine form just mentioned (named by me Heterophnjs 
myriopoda ) seems so truly congeneric with it, I have thought 
myself quite justified in uniting them under one genus; 
and -whether I am absolutely correct in believing the form 
now under review as identical with Focke’s, I trust he may 
(should these lines ever meet his eye) pardon the liberty 
in my associating his name with it, and calling my form 
Heterophrys Fockii. As before, I shall defer a detail of the 
generic and specific characters to the end of this paper. 
Compared with Ileteroplirys myriopoda, this form (II. 
Fockii) is minute, though it occurs of varying sizes. The 
inner sharply bounded sarcode body, in which I am unable 
to detect a ‘ nucleus,’ sends forth through the outer stratum 
long and slender filiform pseudopodia, and, though it contains 
a subperipheral stratum of greenish granules, they do not 
appear to be of the nature of chlorophyll, and the body is 
sometimes colourless, or of the bluish hue not uncommon 
in rhizopodous forms. The outer stratum is of a somewhat 
buff-coloured hue, and often of an indefinite outline, and of 
that somewhat granular, irregularly contorted appearance, as 
if bearing in its substance bands and little spots of varying 
nature and density, which gives it that aspect which, in 
the Club Minutes, I somewhat indefinitely denominated 
‘ streaky.’ Believing, as I do, that Focke and I have had 
the same form under examination, I could not avail myself 
of what would appear to me a better description, so far as it 
goes, of the appearance of this outer region : — “ Es erschei- 
nen in der Sarcode selbst liclitere und triibere Stellen, zarte 
geschlangelte Fadchen, sehr kleine Koruchen, bin und 
wieder ein grosseres Blaschen, zeigen eine Begrenzung 
1 Siebold and Kolliker’s ‘ Zeitschrift fur wissenscbaftliche Zoologie/ 
Bd. xviii, Heft 3, 18G8. “Ueber Schalenlose ftadiolarien. des siisseu 
Wassers,” by Dr. Gustav Woldemar Focke. 
