( 198 ) 
GENERAL INDEX 
To THE Rutzopopa.* 
A. 
acanthophora, Euglypha 
acolla, Nebela . 
acropodia, Phryganella 
actinophora, Ameba . 
PAGE 
iii, 8 
. ii, 118 
ii, 74 
i, 48 
aculeata, Centropyxis . i, 182; iv, 34 
acuminata, Difflugia 
alba, Amceba 
Allogromia Rhumbl. 
fluvialis (Duj.) Rhumbl. 
stagnalis (West) Hopk. 
ALLOGROMIINE 
americana, Nebela 
Ameeba Ehrenb. 
actinophora Auerb. 
alba Greeff 
fluida Gruber 
gorgonia Penard 
granulosa Gruber . 
guttula Duj. 
limax Duj. 
limicola Rhumbl. 
pilosa Cash 
proteus (Pallas) Leidy 
var. granulosa Cash 
striata Penard 
verrucosa Ehrenb. 
var. papyracea Penard 
vespertilio Penard 
villosa Wallich 
AM@BINA 
AMPHISTOMINA 
Amphitrema Archer 
flavum (Archer) Penard 
stenostoma Nussi. 
wrightianum Archer 
i, 38; 
ii, 19 
2 iv, TL 
iii, 187 
iii, 138 
ili, 141 
iii, 127 
ii, 115 
i, 40 
1, 48 
iv, 11 
iv, 8 
i, 52 
iv, 9 
i, 54 
i, 57 
i, 56 
i, 62 
i, 41 
i, 48 
i, 58 
i, 58 
iv, 10 
. iv, 10 
i, 50 
i, 36 
lii, 143 
iii, 147 
iii, 148 
iii, 151 
ili, 149 
PAGE 
Amphizonella Greeff . i, 156 
violacea Greeff . i, 156 
amphoralis, Difflugia . . li, 43 
ampulla, Cyphoderia . iii, 70 
ampullacea, Leptochlamys _ . ii, 146 
apiculata, Difflugiella . ii, 78 
Arcella Ehrenb. 4 o 1, 1h 
' arenaria Greeff iv, 15 
artocrea Leidy . i, 127 
catinus Penard . iv, 14 
dentata Ehrenb. i, 125 
discoides Ehrenb. . . i, 122 
mitrata Leidy . i, 124 
vulgaris Ehrenb. . . 1,118 
var. angulosa (Perty) 
Leidy i, 121 
var. compressa Cash i, 138 
(=A. catinus Penard iv, 14) 
var, gibbosa (Penard) 
West . . 1,121 
var. hemispherica 
(Perty) Wailes . iv, 13 
ARCELLIDA i, 87, 115; ii, 2 
ARCELLINE ‘ iv, 13 
arcelloides, Centropyxis iv, 35 
archeri, Diplophrys iii, 144 
archeri, Pseudodifflugia iii, 120 
Archerina Ray Lank. . . 1,112 
boltoni Ray Lank. . 1,118 
arcula, Difflugia li, 55 
arenaria, Arcella iv, 15 
artocrea, Arcella . 1,127 
aspera, Mastigameba. i, 70 
Assulina Ehrenb. . iii, 49 
muscorum Greeff . . iii, 55 
seminulum (Ehrenb.) Leidy iii, 50 
* For synonyms and occasional references to genera and species the index 
to each separate volume should be consulted. 
10 
