Fig. 
Fig. 
Fig. 
CLG. 
He 
Mr. H. J..Carter on Freshwater. Rhizopoda. 
g, pseudopodia; h, body of the animal; 7, nucleus and nucleolus; 
k, “granules,” (?) globular in shape; 1, 1, vesicule in situ. 
Difflugia elliptica, n.sp., provisionally so named: a, broad side 
of test ; 6, posterior extremity viewed from above, showing its 
compressed form; ¢, pseudopodia. Indian specimen. 
Puate II. 
Arcella vulgaris, Ehy., magnified: a, test; 6, form of plates; 
c, aperture; d, animal attached to the test by dentiform pro- 
cesses; e, e, the two nuclei situated opposite each other; f, vesi- 
cule in great plurality; g, lateral view; h, form of pseudopodia ; 
7, lateral view of more elevated variety ; k, pseudopodia; J, hori- 
zontal view of facetted variety; m, lateral view of the same. 
ig. 15. Arcella patens, Clap. & Lachm. (mihi), magnified : a, under surface 
of test ; 6, body of animal; c, nucleus; d, vesicula; e, upper view; 
f, lateral view; g, size of test on the scale of 4th to ,45th of an 
inch (for comparison). 
Diffiugia Bombayensis, n. sp., magnified: a, grains of quartz ; 
6, cancellated structure of the test beneath, im circles; c, pseudo- 
podia. 
Euglypha alveolata, Duj., magnified ; furnished with twelve hairs: 
a, form and arrangement of body-scales, more magnified ; 6, ser- 
rated edges of apertural scales, as seen under $th-inch focus. 
Loc. South-east coast of Devon. 
. Cyphoderia margaritacea (Schlumberger), magnified, on the scale 
19. 
20. 
21. 
of ,th to s5oth of an inch: a, test; 5, form of scales; c, beaded 
form of apertural margin; d, test less magnified, viz. on a scale 
of ith to s4;th of an inch (for comparison); e, ditto, acuminated 
variety ; f, f, pseudopodia, more or less branched; g, h, forms 
under retraction, the latter incepting a particle of food at its ex- 
tremity ; 7, body of the animal, contaiming fragments of nutritious 
matter in progress of digestion; &, nucleus, surrounded by / ob- 
long “ granules” (?);_m, vesiculz opposite the constriction of the 
body, situated as in Euglypha (assumed position). 
Ameba monociliata, n. sp., magnified ; under two different forms: 
a, cilium ; 6, villous appendage on posterior extremity. 
Actinophrys paradoxa, nu. sp., magnified: a, simple form; 4, the 
same, covered with capitate tentacula, the capitate portion not 
visible, probably from their shortness and evenness in length; ec, 
ditto, with both capitate and actiniform tentacula; d, ditto, with 
the capitate portion now become visible, and these tentacula of 
different lengths. The figures a, 6, c represent changes witnessed 
successively in the same individual ; d represents another indivi- 
dual, assumed to be of the same species, with the capitate cilia 
fully developed: this is the commonest form, perhaps because 
most easily recognized. 
Actinophrys Eichhornii, Ehy., magnified; scale th to z3;th of an 
inch (for comparison): a, a, investing membrane seen extending 
up the actiniform tentacula,also covering the contracting vesicles ; 
b, vacuoles with which the body is densely charged; c, the same, 
more magnified, showing the granules within their interior, which 
are so remarkable for their active motion (probably owing to that 
of the protoplasm in which they may be suspended); d, actini- 
form tentacula, formed of the granular protoplasm of the paren- 
chyma only, but sheathed apparently throughout with the in- 
vesting membrane (I did not see any of the vacuoles in the 
