32 Mr. H. J. Carter on Freshwater Rhizopoda 
the Diatomaceze) stands figured in different parts of my journal 
since 1855, as it is found in the island of Bombay, and now 
copied into Plate II. fig. 15. Its diameter there does not ex- 
ceed the =3,,th part of an inch, which is less than half the size 
of the species found near Berlin by Claparéde and Lachmann ; 
but, like that, the test is hemispherical, open below, and the 
nucleus and vesicula single; while, unlike it, the test of the 
Bombay specimens is light-brown or fawn-coloured. Portions 
of food were observed in it ; and I think the pseudopodia were 
more pointed than those of Arcella vulgaris—thus more resem- 
bling those of Ameba. It was found abundantly in fresh water, 
creeping over filaments of Spirogyra and Cladophora. I have 
not yet met with it on the south coast of Devon. 
One of the figures in my journal is subspherical, apparently 
in preparation for forming a new individual by duplicative divi- 
sion, and thus represents the new half a little less in size, and 
much lighter in colour, than the older one,—which not only 
makes it resemble the Pyzzdicula (c) figured by Ehrenberg under 
a similar condition, but also the globular frustules of the chain- 
like Diatomacez (e. g. Melosira) when, under division, their 
hemispherical form is supplying the new half. I think, by and 
by, much alliance will be found to exist between the Rhizopoda 
and the Diatomacez. 
Evetyena, Dyj. 
Euglypha compressa, nu. sp. Pl. I. fig. 18. 
Test ovate, compressed, convex, more or less expanded later- 
ally, terminating in a sutural edge all round, except at the aper- 
ture, which is 10—12-denticulated ; composed of elongated hex- 
agonal scales in juxtaposition, except at the aperture, where 
their free ends are pointed ; furnished with about twenty hairs or 
spines irregularly scattered along a little more than the posterior 
half of the sutural line. Animal occupying the whole of the 
test, except towards the centre, where it is constricted, and thus 
forms a line of demarcation between the anterior opake portion, 
which contains the food, and the posterior or transparent one, 
which contains the nucleus together with a great number of 
colourless cells. The latter, globular in figure, with strongly de- 
fined edge, appear to be the “ granules.” Vesicula in plurality, 
situated opposite the constricted portion of the body. 
Hab. Heath-bog water. Progression erect, or with the aper- 
ture downwards. Locomotion and capture of the food performed 
by pseudopodia, which are straight, attenuated, ray-like, and of 
variable length. 
Size. Length ~4,th, breadth 51,th, thickness in the mid- 
